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UNIVERSITY    OF     ILLINOIS     BU,LLETIN 

Vol.  X  NOVEMBER    11,  1012  No.  11 

[Satered  Peb.l4,1902,at  Urbafla,Ill.,as  second-class  matter  under  Act  of  Congress  of  Jnly  16,1894] 


BULLETIN  No.  9 

(Eeyised  Edition) 

AN  EXTENSION  OF 

THE  DEWEY  DECIMAL 

SYSTEM  OF  CLASSIFICATION 

APPLIED  TO  THE 

ENGINEERING  INDUSTRIES 

BY 

I^.  P.  BRECKENRIDGE 

AND 

G.  A.  GOODEJNOUGH 


UNIVEESITY  OF  ILLINOIS 
ENGINEERING  EXPERIMENT  STATION 


URBANA,  IL,L,INOIS,  ' 
PUBI,ISHED  BY  THE  UNIVERfel^if 

Pricb:  Fifty  Cents 
European  Agent 
Chapman  and  Hall,  Ltd.,  London 


THE  Engineering  Experiment  Station  was  established  by  act  of 
the  Board  of  Trustees,  December  8,  1903.  It  is  the  purpose  of 
the  Station  to  carry  on  investigations  along  various  lines  of  en- 
gineering and  to  study  problems  of  importance  to  professional  engi- 
neers and  to  the  manufacturing,  railway,  mining,  constructional  and 
industrial  interests  of  the  State, 

The  control  of  the  Engineering  Experiment  Station  is  vested  in  the 
heads  of  the  several  departments  of  the  College  of  Engineering.  These 
constitute  the  Station  Staff,  and  with  the  Director,  determine  the  char- 
acter of  the  investigations  to  be  undertaken.  The  work  is  carried  on 
under  the  supervision  of  the  Staff,  sometimes  by  research  fellows  as 
graduate  work,  sometimes  by  members  of  the  instructional  staff  of  the 
College  of  Engineering,  but  more  frequently  by  investigators  belonging 
to  the  Station  corps. 

The  results  of  these  investigations  are  published  in  the  form  of 
bulletins,  which  record  mostly  the  experiments  of  the  Station's  own 
staff  of  investigators.  There  will  also  be  issued  from  time  to  time  in 
the  form  of  circulars,  compilations  giving  the  results  of  the  experiments 
of  engineers,  industrial  works,  technical  institutions,  and  governmental 
testing  departments. 

The  volume  and  number  at  the  top  of  the  title  page  of  the  cover 
are  merely  arbitrary  numbers  and  refer  to  the  general  publicatiohs  of  the 
University  of  Illinois;  above  the  title  is  given  the  number  of  tJte  Engi- 
neering Experiment  Station  bulletin  or  circular,  which  should  be  \Lsed 
in  referring  to  these  publications. 

For  copies  of  bulletins,  circulars  or  other  information  address  the 
Engineering  Experiment  Station,  Urbana,  Illinois. 


UNIVERSITY    OF    ILLINOIS 
ENGINEERING  EXPERIMENT  STATION 

Bui^tETiN  No.  9  Revised  Edition  November,  1912 

AN  EXTENSION  OF  THE 

DEWEY  DECIMAL  SYSTEM  OF  CLASSIFICATION 

APPLIED  TO  THE 

ENGINEERING  INDUSTRIES 

by 
L,.  P.  Breckenridge*,  Professor  of  Mechanicai.  Engineering 

and 
G.  A.  GooDENOUGHt,  Associate  Professor  of  Mechanicai,  Engineering 

I  INTRODUCTION 

PAGE, 

1 .  Preliminar}' 2 

2.  Explanation  of  the  Decimal  System 2 

3.  Relative  Index. 3 

4.  Uses  and  Advantages  of  the  Classification  and 

Index 4 

5.  Variations  and  Modification 5 

6.  Acknowledg-ments 7 

7.  Illustrations 8 

II  TABLE  OF  CLASS  NUMBERS 9 

III  RELATIVE  INDEX 81 


*University  of  Illinois,  1894-1909:  Yale  University,  1909-date. 
iRecently  appointed  Professor  of  Thermodynamics. 


257874 


2  IIvUNOIS  ENGINEERING  EXPERIMENT  STATION 

I.     Introduction. 

1.  Preliminary. — The  decimal  system  of  classification  was 
devised  and  elaborated  by  Mr.  Melvil  Dewey,  formerly  director 
of  the  New  York  State  Library.  This  system  was  intended  pri- 
marily for  the  use  of  librarians  in  the  classification  and  arrange- 
ment of  books  and  pamphlets,  but  it  was  soon  found  that  the  system 
furnished  also  a  simple  and  effective  means  of  classifying,  index- 
ing and  filing  literary  matter  of  all  kinds.  Engineers  have  found 
it  useful  for  indexing  technical  data  and  information,  catalogs, 
reports,  card  systems,  drawings,  etc.,  and  it  has  been  found  equally 
useful  by  manufacturing  and  business  concerns. 

Recognizing  the  value  of  the  decimal  system  as  a  means  of 
classifying  and  indexing  technical  literature,  the  department  of 
mechanical  engineering  of  the  University  of  Illinois  prepared  sev- 
eral years  ago  an  extension  of  that  part  of  the  Dewey  classifica- 
tion which  relates  to  mechanical  engineering.  The  first  edition 
was  a  small  pamphlet  of  six  pages.  The  demand  for  the  extension 
was  so  great  that  within  a  year  a  second  edition  was  printed,  and 
this  has  been  followed  by  the  third  and  fourth  editions.  In  each 
successive  edition  the  extension  has  been  carried  somewhat  fur- 
ther, and  such  slight  changes  and  modifications  have  been  made 
as  would  add  to  the  clearness  and  consistency  of  the  system  as  a 
whole.  In  the  third  edition  was  incorporated  with  slight  modifi- 
cations the  extensions  for  railroads  and  railroad  engineering 
adopted  by  the  International  Railway  Congress. 

In  the  fourth  edition  are  included  the  extensions  to  mechanical 
and  railway  engineering  already  worked  out;  an  extension  for 
electrical  engineering  made  by  Mr.  J.  M.  Bryant  of  the  electrical 
engineering  department ;  and  more  or  less  complete  extensions 
for  other  branches  of  engineering.  The  whole  will  be,  it  is  hoped, 
a  self-contained  classification  which  will  cover  with  fair  com- 
pleteness the  entire  ground  of  engineering  industry. 

2.  Bxplanation  of  the  Decimal  System. — The  essential  charac- 
teristic of  the  Dewey  system  is  its  method  of  division  and  sub- 
division. The  entire  field  of  knowledge  is  divided  into  nine  chief 
classes  numbered  by  the  digits  from  i  to  9.  Matter  of  too  gen- 
eral a  nature  to  be  included  in  any  of  these  classes  is  put  into  a 
tenth  class  and  indicated  by  o.  The  following  are  the  primary 
classes  of  the  Dewey  system : 

0  General   Works 

1  Philosophy 

2  Religion 


EXTENSION    DECIMAL    SYSTEM    OF    CLASSIFICATION  i> 

3  Sociology 

4  Philology 

5  Natural  Science 

6  Useful  Arts 

7  Fine  Arts 

8  Literature 

9  History 

Each  of  these  classes  is  again  divided  into  nine  divisions,  with 
a  tenth  division  for  general  matter,  and  each  division  is  separated 
into  nine  sections.  The  sections  are  again  sub-divided  and  the 
process  may  be  carried  as  far  as  desired. 

To  show  clearly  the  working  of  the  system  the  divisions  of 
class  6  (useful  arts)  and  the  sections  of  division  2  of  this  class 
(engineering)   are  given. 


6oo 

Useful  Arts 

620 

Engineering 

6io 

Medicine 

621 

Mechanical 

620 

Engineering- 

622 

Mining 

630 

Agriculture 

623 

Military 

640 

Domestic  Economy 

624 

Bridge  and  Roof 

650 

Communication  and 
Commerce 

625 

Road  and  Railroad 

660 

Chemical  Technology 

626 

Canal 

670 

Manufactures 

627 

River  and  Harbor 

680 

Mechanic  Trades 

628 

Sanitary:    Water  Works 

690 

Building 

629 

Other  Branches 

It  will  be  seen  that  the  first  digit  gives  the  class;  the  second, 
the  division;  and  the  third,  the  section.  Thus  625  indicates 
section  5  (railroad  engineering)  of  division  2  (engineering)  of 
class  6  (useful  arts).  For  convenience  a  decimal  point  is  in- 
serted after  the  section  digit.  Further  sub-division  is  indicated 
by  digits  following  the  decimal  point.  For  example  625.2  is  the 
number  indicating  rolling  stock;  625.23  passenger  cars;  625.24 
freight  cars,  etc. 

3.  Relative  Index. — Following  the  classification  is  the  relative 
index,  in  which  the  items  of  the  classification  are  arranged  alpha- 
betically, each  with  its  proper  class  number.  The  index  is  neces- 
sarily incomplete,  as  it  is  manifestly  impossible  to  include  every 
subject  that  might  arise  in  engineering  practice. 

In  a  highly  specialized  industry,  as  for  example,  the  electri- 
cal industry,  there  are  thousands  of  technical  terms  indicative  of 
materials  and  processes  and  to  include  these  would  alone  require 


4  ILLINOIS   ENGINEERING   EXPERIMENT   STATION 

a  volume.  It  is  believed  that  the  index  is  sufficiently  complete 
that  the  user  may  without  difficulty  assign  the  proper  number 
to  almost  any  topic  that  may  arise. 

In  some  cases,  the  same  item  has  two  numbers.  For  example, 
"Telephones"  has  the  numbers  537.82  and  654.6.  Reference  to 
the  classification  shows  that  the  former  number  is  used  when  the 
telephone  is  considered  as  an  application  of  the  electric  current, 
while  the  latter  is  used  when  the  telephone  is  looked  upon  as  a 
means  of  communication.  In  any  case,  reference  to  the  classifi- 
cation will  show  which  number  is  appropriate  to  the  item  under 
consideration, 

4.  Uses  and  Advantages  of  the  Classification  and  Index. — The 
decimal  classification  may  be  used  to  advantage  in  the  indexing 
and  filing  of  notes  and  memoranda,  clippings,  general  information, 
articles  in  technical  journals,  drawings,  catalogs  or  books.  For 
this  purpose,  the  decimal  system  possesses  certain  important  ad- 
vantages over  the  alphabetical  system. 

(i)  It  groups  allied  subjects.  For  example,  suppose  the 
alphabetical  arrangement  to  be  applied  to  a  case  of  catalogs. 
The  catalogs  of  the  various  machine  tools,  as  planers,  lathes, 
drills,  hammers,  etc.,  would  be  scattered  throughout  the  case. 
With  the  decimal  system,  on  the  other  hand  all  these  catalogs 
would  be  grouped  together  under  the  class  number  621.9. 

(2)  Unless  an  elaborate  system  of  cross  reference  is  used, 
the  alphabetical  scheme  is  ambiguous ;  in  many  cases  there  is 
doubt  as  to  what  letter  should  be  given  a  subject.  For  example, 
take  the  item  "Automatic  pneumatic  block  signals."  This  might 
almost  equally  well  be  indexed  under  A,  P,  B  or  S.  With  the 
decimal  system  this  item  has  its  one  number  656.256.4. 

(3)  The  decimal  system  has  the  advantage  of  flexibility  and 
an  indefinite  capacity  for  extension.  For  the  indexing  of  books  and 
catalogs  only  the  main  division  and  sections  will,  in  general,  be 
found  necessary;  but  for  card  indexes  of  technical  literature  the 
most  minute  subdivisions  must  ordinarily  be  used.  In  individual 
cases,  the  user  may  find  that  still  further  division  is  required. 
An  extension  may  tlien  be  made  by  adding  another  decimal  place, 
and  if  still  further  sul)division  is  required  still  another  digit  may 
be  used. 

The  average  engineer,  for  example,  can  easily  index  all 
matter  relating  to  traveling  cranes  under  the  single  class  number 
621.872.  The  designer  or  builder  of  cranes  may,  however,  have 
so  much  matter  relating  to  this  special  subject  that  further  sub- 
division is  needed.     By  the  addition  of  a  digit,  this    matter    may 


EXTENSION    DECIMAL   SYSTEM    OF    CLASSIFICATION  5 

be  divided  into  nine  groups  designated  by  621. 872.1,  621.872.2, 
etc. ;  and,  if  necessary,  each  of  these  may  be  divided  into  nine 
new  groups. 

The  effectiveness  of  the  Dewey  system  has  been  severely 
tested  in  the  Engineering  College  of  the  University.  The 
mechanical  engineering  department  has  a  card  index  of  current 
periodical  literature  which  now  contain  20,000  cards.  These  are 
indexed  by  the  Dewey  system.  The  classification  is  first  made 
by.  students,  and  is  then  revised  by  one  competent  person.  It 
seldom  occurs  that  there  is  any  doubt  as  to  the  proper  class  num- 
ber for  a  given  card.  For  the  guidance  of  those  who  may  wish  to 
use  the  classification  in  connection  with  a  card  index  a  sample 
card  is  shown  on  page  8.  The  class  number  621.63  serves  to 
locate  the  card  in  the  case  and  the  remaining  notes  in  the  margin 
indicate  the  periodical,  volume,  page  and  date.  Thus  the  article 
in  question  appeared  in  the  Proceedings  of  the  Institution  of 
Civil  Engineers,  Vol.  123,  page  272,  December,  1895;  it  occupies 
55  pages  and  has  31  illustrations. 

Blue  prints  received  from  manufacturers;  all  catalogs,  of 
which  there  is  a  large  number;  clippings,  photographs  and  illus- 
trative class  room  material;  all  these  are  indexed  and  filed  by 
the  decimal  system.  In  every  case  the  system  has  been  found 
thoroughly  satisfactory. 

5.  Variations  and  Modifications. — In  the  working  out  of  the 
extension  of  the  various  subjects  the  main  divisions  and  sections 
as  published  by  Mr.  Dewey  have  been  retained  unchanged.  It 
cannot  be  denied  that  there  are  many  glaring  inconsistencies  in  the 
arrangement  of  engineering  subjects.  For  example,  no  engineer 
of  to-day  would  put  electrical  engineering  as  a  division  under 
mechanical  engineering  (621.3)  coordinate  with  blowing  and 
pumping  engines  (621.6)  ;  nor  would  he  relegate  concrete  to  an 
unimportant  place  under  building  materials.  There  is  no  doubt 
that  a  committee  of  competent  engineers  could  vastly  improve  the 
logical  arrangement  of  the  class  numbers  for  engineering  subjects. 
However,  the  system  as  it  is,  with  its  faults,  has  been  in  use  several 
years  and  has  become  more  or  less  universal.  It  is  used  in  libraries 
and  by  many  business  concerns  and  individuals.  It  has  become  a 
sort  of  a  standard  like  the  Sellers  system  of  screw  threads.  For 
this  reason  alone,  radical  changes  would  be  inadvisable.  The  in- 
experienced user  will  be  likely  to  see  room  for  improvement  and 
will  be  tempted  to  make  changes  in  the  system  for  his  individual 
use.  Such  changes  can  only  lead  to  confusion.  It  is  far  better 
to  accept  the  system  merely  as  an  arbitrary  set  of  numbers  cor- 


6 


ILUNOIS   ENGINEERING  EXPERIMENT   STATION 


responding  to  certain  topics  and  resolutely  dismiss  rigid  ideas  of 
logical  sequence  and  consistency. 

There  are  certain  permissible  modifications,  however,  which 
may  be  made  without  violating  the  integrity  of  the  system.  To 
avoid  the  writing  of  long  numbers  a  single  letter  may  be  used  for 
the  first  three  or  four  digits.  Thus  an  electrical  engineer  would 
naturally  have  most  of  his  material  under  621.3  (electrical  en- 
gineering), and  for  this  number  he  could  substitute  the  single 
letter  E.  Likewise,  a  railroad  man  might  use  R  for  625  (railroad 
engineering). 

Another  modification  consists  in  the  use  of  an  alphabetical 
arrangement  for  certain  sub-sections  combined  with  the  decimal 
arrangement  of  main  sections.'  This  is  sometimes  useful  in 
minute  subdivisions.  For  example,  under  621.728,  material  and 
supplies  for  the  foundry,  these  various  materials  may  be  arranged 
in  alphabetical  order. 

The  use  of  form  divisions  is  a  modification  that  may  often  be 
employed  to  advantage.  There  are  certain  set  forms  that  are 
used  throughout  the  whole  range  of  the  Dewey  classification. 
These  are : 

01  Philosophy  or  theory 

02  Compends,  text  books,  etc. 

03  Cyclopedias,  dictionaries 

04  Essays,  addresses 

05  Periodicals 

06  Societies 

07  Education,  teaching  schools,  colleges,  universities 

08  Tables,  calculations  miscellanies 

09  History  progress  and  development 

These  forms  may  be  further  extended ;    thus : 

064     Exhibits,  etc.    (under  societies) 
072     Laboratories  (under  universities) 

Other  form  divisions  which  apply  particularlv  to  engineering 
are  the  following: 

001  Statistics 

002  Quantities  and  costs 

003  Contracts  and  specifications 

004  Designs  and  drawings 

005  Executive 

006  Working  and  maintenance 


EXTENSION    DECIMAL   SYSTEM    OF    CLASSIFICATION  " 

007  Laws 

008  Patents 

009  Reports 

These  form  divisions  may  be  enclosed  in  parentheses  and  an- 
nexed directly  to  the  usual  class  number.  Thus  62  (07)  indicates 
engineering  education;  621.32  (09),  progress  of  electric  lighting; 
621.57  (008),  patents  on  ice-making  machinery,  etc.  The  object 
of  this  parenthesis  separation  of  the  form  divisions  is  convenience 
in  cross-references.  For  example  if  one  is  interested  in  patents 
he  may  write  his  class  numbers  as  follow : 

(008)62     Patents — Engineering 
(008)66     Patents, — Chemical  technology 
(008)69     Patents — Building 

In  this  way  all  cards  on  patents  are  grouped  together. 

Other  modifications  will  suggest  themselves  to  the  user  as  he 
becomes  more  familiar  with  the  system. 

6.  Acknozvledgments. — The  authors  are  much  indebted  to  Mr. 
J.  M.  Bryant  for  his  work  on  the  extension  of  electrical  engineer- 
ing and  to  Mr  A.  L.  Voge,  Washington,  D.  C,  for  valuable  criti- 
cisms and  suggestions. 


ILLINOIS  ENGINEERING  EXPERIMENT  STATION 


Sample  Card  from  Card  Index 


624.63 

fuc.  ^.  f.  ^. 

<^.    .123  ji.  272 

'95 

^entu|'u<jaf  ^an4 

(55  f.    3U)         ^.   ^cenan  antl  flO.    ^ifiett 
^ui€6  t€4utt4  of  eiaao^atc  <jc|ielim€ivt,i  on 
llic  cUiciencu  of  jani,  ana  atJuwi  cfia^acteUitic 
cuIdcA  lluil  inau  (le  cmjiiouta  m  the  a<4tan  oi  a 
ian  uulli  inaxtinum  emciencu  lot  a  giucu  dutii. 

A.l>breviations  Used  on  Index  Cards 


pages   p 

diagrams,  sketches,  etc d 

curves,  plots,  or  groups  of  same c 

illustrations,   photographs,   etc i 

tables  of  data,  etc t 

words    w 

volume  V 


TABLE 

OF 

CLASS  NUMBERS 

330 

Political  Economy 

33  J 

Capital     Labor  and  Wages 

A 

Relations  of  Capital  to  Labor 

.2 

Wages     Profit  sharing     Compulsory  insurance 

.3 

Labor  of  children 

.4 

Labor  of  women 

.5 

Convict  labor     Prison  contracts 

.6 

Pauper  labor     Cheap  foreign  labor 

.7 

Skilled  and  unskilled  labor 

.8 

Laboring  classes 

.81 

Hours  of  labor 

.82 

Places  of  labor    Dangers 

.83 

Food     Clothes     Shelter 

.84 

Morals  and  habits 

.85 

Helps     Lectures,  libraries,  reading  rooms,  etc. 

.86 

Training      Apprenticeship 

.87 

Organization  of  labor 

.88 

Trades  unions 

.89 

Strikes 

370 

Education 

380 

Commerce     Communication 

385 

Railways   from  the  Economic   and   Financial 

Point  of  View 

1^  ILLINOIS    EiNTGINEERING   EXPERIMENT    STATION 

385.0  General  works 

(Compends,    Essays,    Periodicals,    Societies,    Reports,    Statistics, 
History) 

A  Railways  from  the  financial  point  of  view 

.2  Competition  of  railway  and  steamship  lines 

.3  State  control  of  railways 

A  Administrative  organization  of  railways 

•5  Personnel 

(Relations  of  railroads  to  employes,  etc.) 

.6  International  agreements  relative  to  railroads 

.7  Interstate  commerce  commission 

386  Canals  and  Highways  from  an  Economic  Aspect 

387  River  and  Ocean  Transportation 

388  Rapid  Transit  in  Cities 

389  Weights  and  Measures 

510         Mathematics 

511  Arithmetic  512  Alg^ebra  513  Geometry  514  Trisroiiometrv 
515  Descriptive  Geometry  and  Proiection  516  Analytical  Geometry 
517  Calculus        519  Probabilities 

520         Astronomy 
530         Physics 

531  Mechanics 

A  Pure  motion     Kinematics 

*2  Statics     Graphic  statics 

.31  Force  and  its  measure 

(Traction  dynamometers,  weig-hing-  scales,  etc.) 

•3  Dynamics     Kinetics 

♦4  Work     Friction 

(KriotioM  brakes     Transmission  and  absorption  dynamometers) 

•5  Gravity 

.6  Conservation  of  energ:y 

.7 

.8  Machines     Transmission  of  force 


EXTENSION    DECIMAL   SYSTEM    OF    CLASSIFICATION  H 

53^.9  Tables     Problems     Questions 

532  Liquids     Hydrostatics     Hydraulics 

.5  Liquids  in  motion     Flow  in  pipes,  channels,  etc. 

533  Gases     Pneumatics    Air 
.1  Properties  of  gases  and  vapors 
.2  Laws  of  compressibility 

.3  Atmosphere 

»6  Aeronautics 

.7  Kinetic  theory  of  gases 

534  Sound    Acoustics 

535  Light     Optics 

536  Heat 

.1  Theory     Nature 

2  Communication 

.3  Action  of  bodies  on  heat 

(Reflection,  refraction,  radiation,  absorption) 

A  Effects    Action  of  heat  on  bodies 

.46  Combustion 

«5  Temperature     Measurement  of,  etc 

.51  Thermometry 

.52  P}Tometry 

.53  Electric  methods  of  measuring 

.6  Calorimetry 

.7  Thermodynamics 

.71  The  perfect  gases 

.72  The  vapors 

.73  Thermodynamics  of  the  steam  engine  and  other 

heat  motors 
.74  Flow  of  fluids 

.8  Applications 

.9  Tables     Problems     Questions 


12  ILLINOIS   ENGINEERING  EXPERIMENT   STATION 


537 

Electricity- 

A 

Theory    Nature 

.2 
3 
A 

Statical 

Atmospheric     Lightning  rods 

.5 

Dynamical 

.6 

Electrodynamics 

.7 

Electrical  measurements 

.8 

Applications     (See  621.3  etc) 

.81 

Telegraph     (See  654) 

.83 

Telephone     Microphone     (See  631.35) 

.83 

Dynamos    Electric  lighting     (See  621.31) 

.84 

Transmission  of  power    Storage     (See  621.34) 

.85 

Electro-metallurgy 

.86 

Galvanometers 

.87 

Medicine 

.88 

Electric  signals 

538 

Magnetism 

539 

Molecular  Physics 

A 

Theory     Molecular  structure 

a 

Properties  of  Solids 

.3 

Elasticity     Torsion 

.4 

Strength  of  materials 

(See  also  620.1.      General  theory  should  go  under  530.4;  tests  an 
results  of  tests,  under  620.1) 

540 

Chemistry 

549 

Mineralogy 

550 

Geology 

553 

Economic  Geology 

A 

Ore  deposits 

EXTENSION    DECIMAL   SYSTEM    OF    CLASSIFICATION  13 

553.2  Carbon  series 

.31  Peat 

.22  Lignite  and  jet 

.23  Cannel  coal       Bituminous  shale 

.24  Bituminous  and  semi-bituminous  coals 

.25  Anthracite  and  graphitic  anthracite  coals 

.28  Petroleum     Natural  gas 

.3  Ores  of  iron 

A  Ores  of  metals  other  than  iron, 

,5  Building  stones 

.51  Marbles  and  limestones 

.52  Granites  and  syenites 

.53  Sandstones 

.54  Slates 

.57  Trap 

.6  Earthy  economic  materials 

.61  Fire  and  brick  clays 

.62  Sands 

.65  Emery 

.68  Limes  and  mineral  cement 

620  Engineering 

62(001)  Statistics 

62(002)  Quantities,  costs,  etc. 

62(07)  Engineering   education 

620J  Applied  mechanics     Engineering:  materials 

.11  Strength  of  materials     General  theory 

.112  Tests     Factors  affecting  strength 

.1  General:     influence    of  temperature,    selection   of   test 

pieces,  etc. 

.2  Corrosion     Weathering     Protection  against  deteriorat- 

ing influences 

.3  Elastic  limit  tests :     plasticity,   fatigue  deformation 

.4  Tension,  compression,  torsion,   flexure,  shearing 

.41  Tensile  tests 

.42  Compression  tests 

.43  Torsion  tests 


14  ILLINOIS   ENGINEERING  EXPERIMENT   STATION 

620.112.44  Flexure   (transverse)   tests 

.45  Shearing  tests 

.46  Repeated  stress  tests 

.5  Impact     Repeated  shock  tests 

Crystallization  and  formation  of  cleavage  planes 
.6  Hardness  tests 

.7  Special  tests 

Varying  for  different  materials 
.S  Tests  on  special  shapes  and  forms 

.82  Plates  and   structural  shapes 

Bars,   rods,   angles,  beams:   T,  bulb,  I,   and  channel 
beams 
.83  Columns,  built   columns   tubes,    pipes,    cylinders 

.84  Rollers     Spheres,  solid  or  hollow     Ball  bearings 

.85  Springs 

.86  Hooks     Chains     Hoops    Rings 

.87  Rivets     Bolts     Screws     Nails 

Riveted  joints  of  plates 
.88  Wire     Wire  rope     Cables     Hawsers 

.89  Other  forms 

.9  Other  tests 

.12  Tests  of  timber 

.13  Tests  of  Stone     Cement     Concrete 

.132  Stone 

.135  Cement 

.136  Concrete 

.137  Reinforced   concrete 

•139  Otlier  :  artificial  stone 

.14  Brick,  tile,  etc. 

.15  Masonry  adhesives 

Cement,  mortar,  plaster  of  paris,  etc. 
.17  Iron  and  steel    Testing  machines 

.IS  Other  metals 

.19  Other  materials 

•  19.1  ^Mineral :     asbestos,   mineral   wool 
.196  Asphalt    Tar 

•  197  Vegetable:  paper,  hemp,  etc. 
.198  .'\nimal :  hair,  hide,  bone,  etc. 
.199 

.2  Compends     Handbooks 

.3  Dictionaries,  cyclopedias 

.4  Essays 


EXTENSION    DECIMAL   SYSTEM    OF    CLASSIFICATION  15 

620.5  Periodicals 

♦6  Societies 

,7  Study  and  teaching:     Instruments 

.8  Tables  and  calculations 

.9  History  of  engineering 

621  Mechanical  Engineering 

(The  same  form  divisions  applj'  to  621  as  to  62  above) 

A  Steam  engineering 

.101  Applied  thermodynamics 

.11  Mechanism  of  steam  engine      Design  of  engine 
parts 

.111  General 

.112  Types  of  engines 

.12  Marine  engines 

.121  General 

.122  Types  of  marine  engines 

.123  Marine  steam  turbines 

.13  Locomotives 

.131  Theory  of  the   locomotive 

.1  Adhesion      Tractive    force      Horsepower 

.2 

.3  Tests 

.132  Types   of  locomotives 

.133  Locomotive  boilers       Production  of  steam 

.1  Combustion       Fuels       Petroleum       Fuel   consumption 

.2  Grate  and  ash  pit       Firebox       Stays 

.3  Shell  and  tubes 

.4  Smokebox  and  stack 

.5  Exhaust  pipe 

.6  Dome   and    throttle 

.7  Boiler    feeding        Pumps,    injectors        Purification    of 
water       Scale  prevention 

.9  Miscellaneous  fittings       Gage  cocks,  safety  valves,  etc. 

.1.34  Engine  of  the  locomotive 

.1    ■  Driving  mechanism       Cylinders,  pistons,  rods,  cranked 
axles,  etc. 

.2  Steam  distribution       Slide  valves 

.22  Special  types  of  valves  and  valve  gears 

.4  The    compound    principle       Distribution    in    compound 
locomotives 


18  ILLINOIS   ENGINEERING   EXPERIMENT   STATION 

621.134.5  Lubrication   of    locomotive 

.135  Running  gear 

•1  Frames       Frame  plates       Transverse  bracing,   attach- 

ments to  boiler,  etc. 
•    -2  Wheels,    boxes,    and    axles       Disturbances       Counter- 

balancing 
•3  Suspension       Springs,  saddles,  equalizing  levers,  etc. 

.4  Trucks       Bissell   trucks,   four-wheel   trucks,   etc. 

.5  Locomotive   brakes 

.136  Tenders 

.1  Design  of,  weight  of,  brakes,  etc. 

.2  Coupling  arrangements 

•3  Taking   water    without    stopping;    track    tanks;    water 

scoops 
.137  Management   of   locomotive       Engineer's    and   fireman's 

duties      Assignment  of  crews,  etc. 
•138  Maintenance  and  repair  of  locomotives 

.1  Round  houses 

•5  Locomotive  repair  shops 

•139  Supplies       Alaterials 

.14  Traction  engines  (agricultural,  road  roller,  etc.) 

.146  Agricultural :    tractors,  etc. 

.15  Portable  engines 

.156  Agricultural:     threshers,   etc. 

.16  Stationary  engines 

.164  Types 

.2  Throttling  engines 

.3  Automatic  shaft  governor  engines 

.4  Releasing  gear  engines    (Corliss,  etc.) 

.5  Single    acting    engines    of    Westinghouse    or   Williams 
type 

.165  Steam  turbines 

.1  Theory 

.11  Methods  of  calculation 

.12  Vanes  and  buckets 

.13  Guide  vanes  and  nozzles 

.14  Stresses  in  rotor  or  disc 

.15  Windage 

.2  Types 

.21  Velocity   turbines 

.22  Pressure  turbines 

.23  Combined  velocity  and  pressure  turbines 

.3  Construction       Details  of  design 

(32  Vanes,  buckets;  .33  euitle  vaiu>s.  nozzlts;  .34  rotor,  discs;  .35 
valves,  CO veriiors,  safety  devices;  .3()tlirust  balaucinir;  .37  mass 
balniK-lntr;  .3.'^  casing-,  etc.;  .30  bearings,  etc.) 

•  166  Rotary  engines 


EXTENSION    DECIMAL   SYSTEM    OF    CLASSIFICATION  17 

621.167  Hoisting  engines,   hauling  engines,   dredge  engines,  and 

other  special  types 

.18  Steam  generation  and  transmission 

Fuels,  furnaces,  boilers,  piping,  power  plants 
For  steam  heating  see  697.5 

.181  General 

.182  Fuels       Combustion 

.2  Fuels  for  boiler  heating 

.22  Solid  fuels :  coal,  lignite,  wood,  sawdust,  peat 

.23  Liquid  fuels :  tar,  petroleum,  alcohol 

.24  Gaseous   fuels :  gas   from  blast   furnaces,  coke  ovens, 

natural  gas 

.25  Composite  fuels :  city  refuse,  coal  dust,  trash 

.3  Fuel  consumption 

Practical  experiments   with  a   single    fuel 

.4  Comparative  consumption 

Practical  experiments   with   various   fuels 

.183  Furnaces       Draft 

.1  General 

Heating  and  grate  surfaces 

.2  Types  of  furnaces 
.3 
.4 

.5  Furnace  parts  and  construction  details 

.52  Grates 

.53  Stationary  grates 

.54  Shaking,  dumping  and  step  grates 

.55  Ashpits       Furnace  doors 

.57  Burners  for  liquid  fuel 

.6  Mechanical  stokers 

.62  With  traveling  grate 

.63  With  rocking  grate 

.64  With  step  grate  (Roney  grate) 

.65  With  plunger 

.66  With  screw 

.7  Other  appliances 

.77  Pulverized   fuel  appliances 

.78  Fuel  and  ash  conveyors       Ash  removers 

.8  Chimneys       Stacks       Draft  appliances       Smoke   con- 
sumers 

.82  Natural  draft       Dampers       Uptakes 

.84  Induced  draft 

.85  Forced  draft 

.184  Boilers 

.1  General 


18  ILLINOIS   ENGINEERING   EXPERIMENT   STATION 

621.184.13  Boiler  economy    Tests     Feedwater 

.2  Types 

.22  Marine 

.23  Locomotive,  traction,  portable 

.24  Stationary 

.25  Firetube  boilers   (tubular) 

.252  Internally  fired 

.253  Externally  fired 

.26  Water-tube  boilers   (tubulous) 

.27  Flash   generators       Instantaneous   vaporizing  boilers 

.5  Boiler  construction       Setting       Parts 

.52  Shell       Heads       Tubesheets       Domes       Drums 

Riveted  joints,  staying  and  bracing 

.53  Tubes       Ferules       Rings 

.54  Casing 

.55  Inspection  and  cleaning  parts :  man  and  hand  holes, 

cleanouts,  covers 

.56  Setting  and  hanging 

.57  Foundations :    masonry,   flues,   etc. 

.7  Boiler  accessories 

.72  Water  gauges,  floaters,  gauge  glasses,  vv^arning  whis- 

tles 

.73  Pressure  gauges,  manometers,  safety  valves 

.79  Other :    air   cocks    and   blowout   valves,    zincs,   steam 

collectors 
.185  Steam   transmission  and   distribution.       Piping 

.1  General :     laws  of  flow,  condensation,  friction 

.2 

.3  Connections :    mains,  au.xiliary  piping 

.4  Valves 

Stop,  safety,  reducing       Pressure  regulators 

.5  Drains   and   traps     Rceivers  and   distributing   valves 

.6  Covering       Insulators 

Nonconductors  for  high,  low  and  medium  temper- 
atures 

.7  Joints   and  cements       Expansion  joints 

.8  Utilization  of  exhaust  steam 

19  Steam  boiler  and  power  plants.     Central  stations 

.191  General 

.192  Arrangement  and  housing  of  apparatus 

.5  Provision   for  enlargement 

.193  Care  and  management  of  steam  apparatus 

.194  Boilers 


EXTENSION   DECIMAL  SYSTEM   OF    CLASSIFICATION  19 

621.194.1  Firing 

.2  Feeding 

.3  Treatment  of  feed  water :  purification,  softening 

.4  Scale  prevention      Incrustation 

.7  Inspection      Hydraulic  tests      Rating 

.195  Engines:  oiling,  packing,  adjusting 

.196  Duration       Wear 

.5  Corrosion 

.197  Steam  plant  accessories       Economic  appurtenances 

.2  Feedwater  appliances 

Tanks,   heaters    economizers,   filters,   purifiers,    reg- 
ulators 
.3  Pumps       Injectors       Return  traps 

.4  Separators 

.5  Superheaters 

.6  Condensers  and  cooling  towers 

.62  Surface  condensers 

.63  Jet  condensers 

.64  Cooling  towers 

.67  Condenser  accessories 

.7  Instruments 

Indicators,     tachometers,     gauges,     dynamometers, 
thermometers,  pyrometers,  lubricators,  etc. 

♦2         Hydraulic  engines  or  motors 

General  theory  of  hydraulics     (See  532) 

.21  Water  wheels 

.22  '      Overshot  and  breast  wheel 

.23  Undershot  wheel 

.24  Turbines 

.241  General :  parts    (buckets,  guides,  regulators) 

.242  Reaction  or  pressure  turbines 

.247  Impulse  turbines 

.25  Water  pressure  engines       Accumulators 

.252  Hydraulic  pumps 

.253  Piping  for  high  pressure 

.254  Accumulators 

.26  Hydraulic  machinery  and  appliances      Hydraulic 

presses 
For  theory  see  532.81 

.262  Funicular  engines       Hydraulic  tackle 

.263  Hoists       Elevators       Cranes 

.264  Special  handling  and  lifting  machinery  for  steel  works, 

etc. 


-0  ILLINOIS   ENGINEERING    EXPERIMENT    STATION 

621.266  Presses       Forging  and   stamping  machines 

.267  Accessories:     injection  pumps 

.269  Mining,  tunneling  and  other  hydraulic  appliances 

Hydraulic  giant,  Brandt's  hydraulic  gun 

.27  Hydraulic  rams 

For  theory  see  physics  533.83 

.272  Lifting  rams       Montgolfier  ram,  Bolle  ram,  etc. 

.273  Pumping  rams      Leblanc  ram 

See  also  621.64  Pumps 
.274  Compressing  rams       Sommelier  ram 

.29  Flood  gates    Dams     Mill  sluices    Head  and  tail 

races 

♦3  Electrical  Engineering 

.3I-.37   Heavy  Current  Engineering: 

.31  Generation    of    electricity     Dynamoelectric    ma- 

chinery    Transformers 

.311  General 

.312  Central  stations 

.312(001)  Generalities,  statistics,  data,  etc. 

(002)  Economics,  costs,  current  prices,  etc. 

(003)  Specifications 

(004)  Designs,  drawings,  etc. 

(005)  Management 

(006)  Working  and  maintenance 

(0064)  Operation  and  running 

(0065)  Regulation  and  control 
(0069)                Repairs  and  renewal 

(007)  Testing  of  power  plants 
(008) 

.1  General 

.2  Stations   for  lighting  only 

.22  Steam  driven 

.23  Gas  driven 

.24  Hydraulic 

.25  Composite 

.3  Stations  for  traction  only 

.32  Steam  driven 

.33  Gas  driven 

.35  Composite 

.4  Stations  for  power  transmission 

.42  Steam  driven 

.43  Gas  driven 

.44  Hydraulic 

.5  Combined  stations 


EXTENSION    DECIMAI,   SYSTEM    OF    CLASSIFICATION 


21 


621.312.52 
.53 
.54 
.6 
.63 
.64 
.65 
.313 

(001) 
(002) 
(003) 
(004) 
(005) 
(0051) 
(0052) 
(00522) 
(00523) 
(0053) 
(00532) 
(00533) 
(00534) 
(0054) 
(00542) 
(00543) 
(00544) 
(006) 
(0064) 
(0065) 
(007) 
(008) 
(0082) 
(0083) 
(0084) 
(0085) 
.1 
.2 
.21 
.22 
'    .23 
.24 
.245 
.246 
.247 
.248 
.25 
.26 
.27 


Steam  driven 
Gas  driven 
Hydraulic 
Substations 
Transformer   substations 
Converter  substations 
Accumulator  substations 
Dynamo  electric  machines 
General,  statistics,  data 
Costs 

Specifications   for  D.E.M. 
Designs,  drawings,  specifications 
Construction,  installation 
General  details  and  parts 
Electrical  details 
Armature  windings 
Field    windings 
Magnetic  details 
Armature  cores 
Field  cores 
Yokes 
Genera]  details 
Frame,  bed  plate,  etc. 
Bearings 

Shafts,  pulleys,  etc. 
Working,  regulation,  operation 
Operation,  running 
Faults,  diseases,  etc. 
Tests  and  testing  work 
Accessories 
Commutators 
Collector  rings 
Brushes 
Brush  holders 
General;  construction,  installation 
Direct  or  continuous  current  machinery 
Theory 
General  types 

Continuous  current  generators 
Continuous  current  motors 
Constant  speed  motors 
Multispeed  motors 
Adjustable  speed  motors 
Varying  speed  motors      (railway  motors) 
Continuous  current  converters 
Dynamotors 
Compensators  or  balancers 


22  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

621.313.28  Continuous   current  boosters 

.29  Other 

.291  Acyclic  or  homopolar  machines 

.3  Alternating  current  machinery 

.32  General  types 

.321  Single  phase 

.322  Two  phase 

.323  Three  phase 

.4  Synchronous  machines 

.41  Theory 

.42  General  types 

.43  Alternating  current  generators 

.44  Synchronous  motors 

.5  Alternating  current  converters 

.51  Theory 

.52  General   types       Description 

.53  Synchronous  converters 

.54  Phase   converters 

.55  Frequency   changers 

.56  Double  current  generators 

.57  Motor  converters 

.6  Asynchronous  machines 

.61  Theory 
.62 

.63  Induction  generators 

.64  Induction  motors 

.65  Scries  alternating  current  motors 

.66  Repulsion  motors 

.67  Frequency  converters 

.68  Phase  converters 

.7  Rectifying   apparatus 

.72  Mechanical  rectifiers 

.7.T  Arc  rectifiers 

.74  Flcctrolytic  rectifiers 

.314  Stationary   induction   apparatus 

.1  Theory 

.2  General  types  and  description 

.3  Transformers 

.32  Constant    current    transformers 

.33  Constant  potential  transformers 

.31  Phase   changing  transformers 

.38  Meter  transformers 

.4  Auto  transformers 

.5  Potential  regulators 

.51  Compensator  potential  regulators 

.52  Induction  potential   regulators 

.53  Magneto  potential   regulators 


EXTENSION   DECIMAL  SYSTEM   OF    CIvASSIFICATION 


23 


621.314.6  Reactors  or  choke  coils 

.7  Induction   coils 

.315  Electrostatic  apparatus 

.3  Condensers 

.316  Details  of  electric  machinery,  parts 

.317  Switchboards  and  control  devices,  central  station  wiring 

.1  General 

.2  Panels 

.22  Generator  panels 

.23  Motor  panels 

.24  Feeder  panels 

.25  Transformer  panels 

.26  Converter  panels 

.27  Arc  light  panels 

.28  Accumulator  panels 

.3  Switches 

.31  General 

.32  Knife  switches 

.33  Dial  switches 

,34  Plug  switches 

.35  Oil  switches 

.36  Circuit  breakers 

.4  Rheostats  and  control  devices 

.5  Signal  devices 

.6  Meters  and  indicating  devices 

.7  Barriers  and  compartments 

.8  Protective  devices   (fuses,  etc.) 

.318  Manufacturing  processes 

.319  Transmission  of  electric  energy 

Limited    to   transmission    of   current    from   central 
to   sub-stations    (stepdown   transformers)    and  to 
questions  common  to  all  lines. 

.1  General 

.12  Systems 

.122  Direct  or  continuous  current  systems 

.122.1  2-wire  systems 

.122.2  3-wire  (or  Edison)  and  other 

.122.9  Other  direct  current  systems 

.123  Alternating  current  systems 

.123.1  Single-phase  systems 

.123.2  2-phase   (or  quarter  phase)   systems 

.123.23  3-wire  system 

.123.24  4-wire  system 

.123.3  3-phase  systems 

.123.32  Delta  or  mesh  connections 

.123.33  Star  or  Y  connections 

.123.9  Other  polyphase  systems 


24  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 


621.319.125 

Composite  systems 

Direct  and  alternating  current  combined 

.2 

Lines  and  conductors 

.21 

General 

Interaction  of  parallel  lines,  heat  losses. 

.22 

Overhead  or  aerial  lines 

.222 

Systems 

.223 

Poles :   foundations,  guys,  etc. 

.224 

Cross  arms       Pins 

.225 

Towers 

.23 

Underground  lines 

.232 

Systems 

.233 

Conduits 

.234 

Manholes 

.3 

Cables  and  conductors       Insulating  materials 

.32 

Uninsulated  conductors       Bare  wire 

.33 

Insulated  conductors       Wire  and  cable 

.34 

Cables 

.37 

Insulating  materials 

Leakage       Influence  of  chemic  composition 

.4 

Insulators 

.8 

Protective  devices 

.82 

Line  lightning  arresters 

For  protection  of  central  stations  see  621.317.8 

.32 

Electric  lighting 

.321 

Illumination 

.1 

General 

.2 

Interior  illumination 

.21 

Domestic 

.22 

Large  halls 

.23 

Theatre 

.24 

Shops,  warehouses,  drafting  rooms,  etc. 

.3 

Exterior  illumination 

.32 

Streets 

.33 

Parks  and  open  places 

.4 

Decorative  illumination 

.44 

Electric  signs 

.325 

Arc  lighting 

.1 

General 

.2 

Continuous  current  open 

.3 

Continuous  current  enclosed 

.4 

Alternating  current  open 

.5 

Alternating  current  enclosed 

.6 

Flaming  arc 

.7 

Search  lights,  etc. 

.326 

Incandescent  lighting 

EXTENSION   DECIMAI.  SYSTEM   OF    CLASSIFICATION 


25 


621.326.1 

General :    efificiency,  cost,  etc. 

.2 

Systems 

.3 

Carbon  filament  lamps 

.31 

Metalized  filament 

.32 

Other  carbon  filaments 

.4 

Metal  filament  lamps 

.41 

Platinum  filaments 

.42 

Tantalum  filaments 

.43 

Tungsten  filaments 

.44 

Osmium  filaments 

.45 

Other  metal  filaments 

.5 

Glowers  of  other  materials 

.53 

Nernst  lamps 

.327 

Incandescent    vapor    lighting    and    lamps       Other    elec- 

tric lighting 

.3 

Vacuum  or  incandescent  vapor  lamps 

.4 

Mercury  vapor  lamps 

.5 

Carbon  vapor  lamps      Moore  lamp 

.7 

Vacuum  lamps   for  special  radiations :   Crookes  tubes 

etc. 

.328 

Apparatus  at  service  end  of  line 

.1 

Underwriters'  requirements 

National  electric  code 

.2 

House  wiring 

.3 

Panels 

.4 

Fuses 

.5 

Insulators,  etc. 

.6 

Meters 

.7 
.8 
.9 

Switches 

Other  apparatus 

.33 

Electric  traction 

.331 

General 

.2 

Systems 

.3 

Systems  according  to  service 

.32 

Trunk  lines 

.33 

Interurban 

.34 

Local' 

.342 

Surface 

.343 

Elevated 

.344 

Subway 

.4 

Systems  according  to  current 

.42 

Direct  current 

.43 

Alternating  current 

.431 

Single-phase 

.432 

2-phase 

26  ILLINOIS   ENGINEERING    EXPERIMENT    STATION 

621.331.433  3-phase 

.439  Others 

.5  Systems  according  to  delivery  of  power 

.52  Trolley  systems 

.53  Overhead  trolley 

.54  Underground  trolley 

.56  Third  rail  systems 

.562  Unprotected   third   rail 

.564  Protected  third   rail 

.332  The  line  (including  track) 

.1  General 

.17  Feeders  and  return  systems 

.2  Overhead  wire      Trolley  lines 

.23  Catenary   suspension 

.25  Trackless  trolley 

.3  Third  rail 

.5  Underground  conductor  or  contact 

.6 

.7  Accessories 

.9  Other  types  of  line 

.333  Track 

.1  General 

.16  Deteriorating  influences 

.167  Electrolysis       Leakage 

.2  Rails 

.4  Bonding 

.334  Rolling  stock 

.2  Locomotives 

.3  Motor  cars 

.4  Accessories  and  parts      Control  systems 

Motor,  controller,  current  collecting  devices,  etc. 
Multiple  unit  control 

.5  Locomotive  and  car  wiring 

.7  Running  gear  and  other  non-electric  details 

.35  Chemic  electricity     Voltaic    cells  and  generators 

Primary  and  secondary 

.351  General 

E.m.f.,  counter  e.m.f.,  polarization,  weight,  capacity, 
efficiency,    life,    crumbling,    deterioration    and    det- 
rimental influences;  residues 
.352  Parts  and  accessories  of  cells  and  accumulators 

.1  Containers:  jars,  troughs,  vats,  etc. 

.2  Electrodes    and    their   accessories:    positive    and    nega- 

tive plates  or  elements.     Grids,  supporting  frames, 
insulating  rods,   etc. 


EXTENSION    DECIMAL   SYSTEM    OF    CLASSIFICATION  27 

621.352.3  Diaphragms  and  partitions 

.4  Electrolytes       Depolarizers       Packing 

.5  Circulators       Conduits   and  piping 

.6  Connections       Terminals       Binding  posts 

.7  Regulating  apparatus 

.8 

.9  Other  apparatus 

.353  Primary  cells 

See  also   537.5   Voltaic  electricity;    541.37   Electro- 
chemistry 

.1  General 

.3  Single   fluid 

.4  Double  fluid       Heavy  current  cells 

.5  Open  circuit   or  non-depolarized 

.6  Closed  circuit  or  depolarized 

.7  Accessories  and  parts 

.8  Classification  according  to  use  or  operating  methods 

.354  Accumulators   or   storage  batteries 
Secondary  cells  and  batteries 

.1  General 

.18  Care  and  handling  of  accumulators 

.2  Construction  of 

.3  Operation  of 

.4  Application  of 

.7  Accessories  and  parts 

.355  Lead  accumulators 

.1  General 

.18  Care  and  handling 

.2  Naturally  formed :     Plante  type 

.3  Artificially  formed :     Faure  type 

.4  Combined   Plante-Faure  types 

.5  Other   lead   accumulators 

.52  Complex    oxid   types 

.55  Lead  element  accumulators 

.56  Copper   lead   accumulators 

.57  Zinc   lead   accumulators 

.58  Cadmium   lead  accumulators 

.356  Alkaline  accumulators 

.357  Other  types  of  accumulators 
Thalium,  gas,  etc. 

.37  Electric  measurements,  meters  and  testing 

.371  General 

.372  Standards       Calibration  of  instruments 

.373  Meters       General  types 

Recording  meters       See  also  special  meters,  621.384 
prepayment   meters 
.374  Special  meters  and  measurements 

.2  Resistance  meters :    inductance,   capacity 

Wheatstone  bridges,  ohmmeters,  resistance  boxes 


28  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

621.374.3  Potential  meters:     voltage 

voltmeters,  electrometers,  standard  cells 
.4  Intensity  meters :     current 

Galvanometers,    ammeters,   coulometers.    Ampere-hour 
meters 
.5  Quantity  or  work  meters       Watt-hour   meters 

.6  Povi^er  meters      Watt  meters 

.7  Frequency  meters      Oscillographs 

.9  Other  meters  and  measurements 

.91  Phase  meters      Power-factor  meters      Synchronizers 

.379  Other  electric  measuring  instruments 

For  other  than   electric  measurements  :  e.  g.,  elec- 
tric thermometers 

WEAK  CURRENT   ENGINEERING 
.38  Electric  communication :     telegraphy,  telephony, 

wireless       For     overhead    or    imderground 
lines,  see  621.3192 

.381  General 

.382  Telegraphy       Systems 

.15  Codes 

.152  Morse 

.153  Continental 

.154  Phillips   (press  code) 

.2  ABC,  dial,  needle  telegraph,  etc. 

.21  Early  experimental   forms 

.22  ABC 

.23  Dial 

.24  Needle 

.25  Pointer 

.29  Other 

.3  Hand  operated  code  telegraphy 

.31  Simplex 

.311  Open  circuit 

.312  Closed  circuit 

.32  Duplex 

.321  Differential    duplex    systems 

.322  Stearns  duplex 

.323  Polar  duplex 

.325  Bridge  duplex  systems 

.34  Quadniplex 

.35  Multiplex 

.36  Synchronous    multiplex :      Delany 

.37  Harmonic  multiplex :     Gray 

.4  Automatic  code  tclegrapliy       High  speed  systems 

.41  Elcctrochemic   automatic :     Bnin.   Morse 

.44  Ink   recording  or  embossing 


EXTENSION   DECIMAL,   SYSTEM   OF    CLASSIFICATION  29 

621.382.45  Wheatstone 

.46  Pollak-Virag 

.47  Telepost   (Delany) 

.5  Printing  telegraphy 

.51  Tape  printing :     stock  tickers 

.53  Other  tape  printing:     Hughes 

.55  Page  printing:     Buckingham,  Murray,  Baudot 

.57  Multiple  page  printing:     Rowland 

.6  Writing  telegraphy 

Transmitting   and    recording   characters    while   being 
written       Gray's   telautograph 

.7  Facsimile   telegraphy 

.8  Submarine   cable   telegraphy 

.9  Other  wire  systems 

.94  Induction  telegraphy :   from  moving  trains,  etc. 

.95  Combined  telegraphy  and  telephony       Phantom   cir 
cuits 

.383  Telegraph   instruments 

.1  Transmitting:     keys,  senders,  etc. 

.2  Intermediate   and   accessory :        relays,   repeaters, 
switches 

.21  Relays 

.22  Differential   relays 

.23  Polarized  relays 

.24  Repeaters,  for  simplex:  Milliken,  Ghegan,  Toye,  etc 

.25  Repeaters  for  duplex  or  quadruplex 

.26  Half  repeaters 

.27  Switches  and  distributing  apparatus 

.28  Protective   apparatus 

.29  Miscellaneous  telegraph  accessories 

.3  Receiving  instruments 

Sounders,   recorders,  etc.       Subdivided,   if  wished, 
like  621.3824-8 

.384  Wireless  electric  communication:  telegraphy  telephony 

.1  General 

.2  Wireless  telegraphy       Systems 

.21  Spark  telegraphy;   by   free  oscillations 

.25  Continuous-train    telegraphy;    by    forced    oscillations 

.3  Instruments 

.31  Sending  apparatus 

.35  Antennae,  aerials,  and  their  substitutes 

.36  Receiving  instruments  and  apparatus 

.4  Applications,   adaptations,   specific   installations 

.5  Wireless  telephony  systems 

.6  Apparatus 

.61  Sending  apparatus 

.65  Aerials,   etc. 


30  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

621.384.66  Receiving  apparatus 

.7  Applications,    adaptations,    specific    installations 

.385  Telephony       Systems 

.1 

.2  General 

.22  Series 

.23  Bridging 

.24  Selective 

.3  Intercommunicating  systems 

Without  central  switchboard 

.32  Common  return  systems ;  selective  at  each  station 

.34  Radial    common    return    systems ;    selective    at    one 
station  only 

.36  2-\vire   systems;   separate   returns 

.4  Central  switchboard   systems 
Manual 

.42  Local  battery  or  magneto  systems 

.46  Common  battery  or  central  energy  systems 

.5  Multiple  switchboard  systems 

.6  Trunking       Transfer  systems 

.61  Trunking 

.63  Transfer  systems 

.7  Semiautomatic  and  automatic  systems 

.72  Semiautomatic 

.75  Automatic 

.76  Strowger  system    (Automatic  Electric  Co.) 

.8  Private  exchanges 

.386  Telephone  instruments 

Terminal ;   subscriber's  instruments 

.2  Transmitters 

.3  Receivers 

.4  Induction  coils 

.5  Condensers 

.6  Hook  or  other  switches 

.7  Call  receiving  apparatus 

.8  Call  sending  apparatus 

.9  Miscellaneous   accessories 

.92  Coin  collecting  devices 

.94  Protective  devices 

.96  Current  supply   (local  batteries) 

.387  Central  switchboards  and  other  station  equipment 

.1  General 

.2  Switchboards,   manual 

.22  Local  battery  or  magneto 

.26  Common   battery 

.3  Multiple  switchboards 

.35  Divided    multiple 


EXTENSION   DECIMAIv  SYSTEM   OF    CIvASSIFICATION 


31 


621.387.4  Trunks       Transfer    boards 

.41  Trunks  and  trunking 

.43  A  boards 

.45  B  boards 

.47  Multiple  plug  transfer 

.5  Switchboard  parts  and  accessories 

.6  Power  plant  equipment  and  accessories 

.62  Accumulators 

.63  Charging  generators 

.64  Ringing 

.7  Automatic  and  semiautomatic  switchboards 

Including  accessories       Subdivided  like  621.3857 

.8  Telephone  transmission 

.81 

.82  Long  distance 

.83  Transposition 

.84  Telephone  cable  construction 

.85  Loading 

.86  Pupin  coils 

.9  Other  central  station  accessories 

.92  Distributing  frames  and  racks ;  main 

.93  Distributing  frames  and  racks ;  intermediate  or  sec- 
ondary 

.94  Protective  devices 

.96  Meters  and  counters 

See  also  621.3286  Electric  light  meters 

.389  Other  electric  communication 

.39  Other  application  of  electricity 

A  Air  and  Gas  Engines  and  other  motors 

.41  Hot  air  engines 

.42  Compressed    (or  rarefied)    air  engines 

.43  Internal  combustion  engines 

.431  General  theory  of  internal  combustion  engines 

.2  Thermodynamics  of  internal  combustion 

.3  Mechanics       Balancing,  etc. 

.432  Cycles  and  systems  of  operation 

.1  Four-cycle  systems 

1,  explosion  motors    2,  constant  pressure  burning' 

.2  Two-cycle   systems 

1,  explosion  type    2,  constant  pressure  type 

.3  Modified  cycles  or  systems 

.433  Gas  turbines 

■434  Internal   combustion  engines    (or   engine  plants)    classi- 
fied according  to  fuels 


32  ILUNOIS    ENGINEERING    EXPERIMENT    STATION 

621.434.1  Engines   (or  plants)    for  gaseous  fuels 

.11  Natural  gas 

.12  Illuminating  gas 

.13  Blast  furnace  gas 

.14  Producer  gas 

For  gas  producers  see  665.8 

.15  Acetylene  gas 

.2  Engines   (or  plants)    for  liquid  fuels 

.21  Gasoline 

.22  Kerosene 

.23  Other  petroleum  oils 

.24  Alcohol 

.3  Engines  for  solid  fuels 

.436  Special  engines  or  motors 

.437  Parts  and  accessories  of  internal  combustion   engines 

1,  Reciprocating  parts;  2,  Shafts,  Journals  and  Bearing's;  3,  Fly- 
wheels; 4,  Governors;  5,  Valves  and  valve  jjears;  6,  Carburetors 
and  mixing'  valves;  7,  Ipnition  Systems;  8,  Oils  and  other  ac- 
cessories. 

.438  Special  applications 

.3  Self-propelled  machinery      Farm  machinery,  road  roll- 

ers, etc. 
.4  Self-propelled    vehicles 

.5  Motors  for  small  boats 

.6  Internal  combustion  engines  in  marine  service 

.7  Airship  motors 

.44  Binary  vapor  eno-ines 

.45  Windmills 

,46  Animal  motors     Tread  mills 

.47  Solar  engines 

.48 

.49 

♦5  Air  compression     Ice  machines     Refrigerators 

.51  Air  compressors 

.515  Dry,  air  compressors 

.517  Wet  air  compressors 

.53  Compressed  air  transmission  and  distribution 

.531  General 

.532  Details    of    transmission        Pipinp.    mains,    pages,    etc. 

Designs  of  transmissions 

.533  Records  of  tests  on  air  compressors  and  transmissions 

.534  Theory  of  air  compression   (thermodynamics  of)       Loss 

of  pressure  in  pi(>es,  etc.  F.flRciency  of  compress- 
ors ;    Reheating,  etc. 


EXTENSION   DECIMAL  SYSTEM   OF    CI^ASSIFICATION 


33 


631. 5i 

.541 
.542 
.543 
.544 
.545 
.546 
.549 

.55 

.56 
.564 
.565 


.566 

.57 

.572 
.573 

.574 
.575 

.58 
.581 
.582 

.6 

.61 

.62 
.63 
.64 

.641 
.642 

.65 

.66 
.67 
.68 
.69 


Application  of  compressed  air 

Air  motors 

Pneumatic  tools;  drills,  hammers,  etc. 

Special  applications  in  railroad  service 
Compressed  air  locomotives 
Pumping  by  compressed  air 
Miscellaneous  applications 

Rarefied  air  and  vacuum  appliances 

cleaner,  etc.) 
Refrigerators 

Refrigerating  fluids 
Refrigerating  systems  and  plants 

Brine  system 

Direct  expansion  system 
Design  of  refrigerating  systems 
refrigerating  surface,  etc. 


(Vacuum 


Calculation  of  piping, 


Refrigerating  machines 

Ammonia  compression  machines 
Ammonia  absorption  machines 
Carbonic  acid  machines 

Miscellaneous  types :     Air  machines,   vacuum   machines, 
etc. 

Ice  making 
Can  system 
Plate  system 

Blowing  and  pumping  engines 

Piston  blowers      Blast  furnace    blowing  engines, 

etc. 
Rotary  blowers 
Centrifugal  blowers 
Steam  pumps  and  pumping  engines 

General  theory       Design  and  construction 
Tests  of  pumps  and  pumping  engines 

Direct-acting  pumps 

Rotary  pumps 

Centrifugal  pumps 

Fire  engines 

Other  blowing  and  pumping  devices 


34  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

62J.7  Manufactories     Engineering:  works      (See  also  670) 

.701  Location,  shipping  facilities,   etc. 

.702  Arrangements  of  shops       Shop  buildings 

.703 

.704  Organization  and   administration 

.705  Employees      Wages  and  salaries       Payment  of  labor 

(Conveniences  for  workmen;  hours  of  work;  piece  work;  premium 
plan;  profit-sliariny;  labor  unions;  strikes  and  lockouts) 

.706  Accounting       Cost-keeping       Estimates 

.707 

.708 

.709 

.71  Drafting  room 

.711 

.712  Arrangement 

.713  Equipment       Desks,   drawing  boards,   etc. 

.714  Materials  and  supplies 

.715  Methods  and  processes  employed  in  making  drawings 

.716  Blue-printing  processes 

.717  Classification  and  storage  of  drawings 

.719  Miscellaneous 

.72  ^^^ood\vorking  shop       Pattern  shop 

.721  Arrangement  of  shop 

.722  Equipment 

.723  Woodworking    methods    and    processes 

.724  Pattern    making 

.725 

.726 

.727  Preservation  and  storage  of  patterns 

.728  Materials  and  supplies 

.729  Miscellaneous 

.73  Forge  shop 

.731  Arrangement  of   forge  shop 

.732  Equipment       Forges,  blowers,  anvils,  etc. 

.733  Forging  processes 

.734  Drop   forging 
.735 
.736 
.737 

738  Materials       Supplies 

.739  Miscellaneous 

.74  Foiin(h-v 

•740  Generalities      (.740.5  Periodicals    .74(i.()  Societies;  .740.')  Historical) 


EXTENSION   DECIMAI,   SYSTEM   OF    CLASSIFICATION 


35 


621.741 

.742 
.743 
.744 
.745 

.746 
.747 
.748 
.749 

.75 

.750 
.751 

.752 
.753 
.754 
.755 
.756 
.757 
.758 
.759 

.76 

.77 
.78 


General  arrangement  of    foundry 
Equipment  of   foundry 

Molding  processes       Green  sand,  dry  sand,  loam,  etc. 
Machine  molding 

Cupola    practice        Mixtures    of    iron        Chemistry    of 
foundry  irons 


Materials   and   supplies 
Miscellaneous 

Machine  shop 
Generalities 

Arrangement   of   machine    shop       Location   of   shafting 
and  machines 

Equipment         (752.1  Machine  tools;  752.2  Small  tools) 

Machine  work       Methods  and  processes 

Bench  work 

Erecting 

Toolmaking       Construction  of  dies,  jigs,  etc. 

Supplies       ^Materials  and  stock 
Miscellaneous 


Blast  furnace 

RolHng  and  drawing  mills 


.79 

.792 
.794 

.795 
.796 

.8 

.81 

.82 

.821 
.822 
.823 

.824 
.825 
.826 


Other  shops  and  departments 

Boiler  and  sheet  metal  shops 
Special  process  shops 

Galvanizing,    plating,    etc. 
Finishing  shop 
Storehouses 

Millwork  and  machinery  of  transmission 
machine  parts 


Design  of 


Principles  of  mechanism 
Journals,  shafting,  etc. 

Journals 

Bearings       Ball  and  roller  bearings       Bearing  metals 

Shop   shafting 

Engine  and  propeller  shafts 

Clutches  and   couplings       Friction   clutches 

Brakes 


36  II^LINOIS   ENGINEERING   EXPERIMENT    STATION 

621.83  Toothed  wheels  and  cams 

.831  Forms  of  teeth;   tooth  curves;  general  theory 

.832  Efficiency  of  gears       Tests      Friction  of  gears 

.833  Design  of  gears 

.1  Spur  gears 

.3  Bevel  and  skew  bevel  gears 

.3  Worm  and  spiral  gears 

.834  Construction:  cutting  and  casting  of  gears 

.835  Chain  gearing 

.837  Ratchet    gearing 

.838  Cams 

.84  Valve  motions  and  gears 

.85  Machinery  and  mill  gearing 

.852  Belt  gearing 

.853  Hemp  rope  transmission 

.854  Wire  rope  transmission 

.858  Friction  gearing 

.80  Hoisting  and  conveying  machinery 

.862  Hoists 

.863  Blocks,  tackle,  etc. 

.864  Winches       Capstans       Windlasses 

.865  Power  shovels 

.866  Dredges 

.867  Conveyors       Telfcrage 

.4  Belt  or  bucket  conveyors 

.868  Telfers 

.87  Cranes  and  elevators 

.872  Derricks 

.873  Revolving  cranes 

.874  Travelling  cranes 

.875  Locomotive  cranes 

.88  Fastenings 

.882  Screws  and  bolts       Systems  of  screw  threads       Screws 

for  transmitting  motion 

.883  Keys  and  cotters 

.884  Rivets       Design  of  riveted  joints 

.SO  Liil)ricaiits       Friction 

.9  Machine  tools 

.0(1  Generalities 

.901  Dcsijin  of  machine  tools                                                 ^ 

.902  Power  required  to  drive  machine  tools 


EXTENSION   DECIMAL   SYSTEM   OF    CLASSIFICATION 


37 


621.91  Planing  and  milling  machines 

.912  Metal  planers,  shapers,  and  slotters 

.913  Wood  planing  machinery 

.92  Grinding  and  filing 

.922  Cylinder  and  surface  grinding  machines 

(Lapping  machines) 

.923  Emery  wheels 

.924  Filing  machines 

.93  Cutting  and  sawing 

.932  Metal  sawing  and  cutting  machinery 

.933  Wood  sawing  machinery 

.94  Turning 

.942  Metal  turning  lathes 

.943  Wood  turning  lathes 

.944  Pipe  threading  machines 

.945  Boring  mills 

.95  Perforating  machinery       Drills 

.952  Drilling  machinery 

.953  Wood  boring  machinery 

.954  Reamers 

.955  Tapping  machines 

.96  Punching  and  shearing  machinery 

.97  Hammers       Nail  and  rivet  machinery 

.98  Bending,  straightening,  and  shaping 

.982  Bending  machinery 

.983  Straightening  machinery 

.984  Flanging  and  die  press  machinery 

.99  Screw  machines       Bolt  and  nut  machinery,  etc. 

Mining  Engineering 

A  Exploration  and  Prospecting 

.11  Theory,  applied  geology,  etc. 

,12  Prospecting 

.121  Surface  indications 

.122  Prospect  trenches,  shafts  and  tunnels       See  622.2 

.123  Booming  and  other  washing  methods 

.124  Boring  methods       See  622.24 

..129  Unreliable    methods,    including    divining    rods,    fortune 
tellers,  etc. 


622 


38  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

622. lo  Surface  surveying 

.131  Surveying  mineral  claims 

.132  Topographical  surveying 

.133  Geological  surveying 

.14  Mining  surveying 

.15  ^Magnetic  surveying 

.16  Faults       See  551.87  and  553.19 

.17  Models 

.18  Examination  of  mineral  properties 

.181  Principles 

.182  Sampling 

.183  Estimation  of  quantity  of  mineral 

.184  Valuation 

.19  Mining  prospectuses       See  553 

.2  Practical  Mining 

.21  Excavation  of  loose  ground       See  622.32 

,211  Pick  and  shovel 

.212  Plow  and  scraper 

.213  Cableways   and  grab  buckets 

.214  Mechanical  shovels 

.215  Water 

.216  Dredges 

.22  Quarrying  dimension   stone 

.221  Plug  and  feathers 

.222  Broaches 

.223  Channelers 

.224  Blasting  systems 

.23  Breaking  solid  ground 

.231  Firo-setting 

.232  Thawing 

.233  Undercutting 

.1  Hand  undercutting 

.2  Machine  undercutting 

.21  Punclicrs 

.22  Cutters 

.221  Chain   machines 

.222  Disk  machines 

.223  Cuttcr-har  machines 

.234  Wedging  without  drill  holes 

.235  Drilling       See  023.24 


EXTENSION   DECIMAL   SYSTEM   OF    ClyASSIFICATION 


89 


622.235.1 

Hand  drilling 

.11 

Churn  drills 

.12 

Hammer  drills 

.13 

Auger    drills 

.2 

Machine  drilling 

.21 

Piston  drills 

.22 

Air  hammer  drills 

.23 

Auger  drills 

.236 

Breaking  from  drill  holes  without  explosives 

.1 

Wedges 

.2 

Freezing  water 

.3 

Wetting  wooden  plugs 

.4 

Compressed  air  cartridges 

.5 

Hydraulic  cartridges  and  direct  hydraulic  pressure 

.6 

Lime  cartridges 

.237 

Explosives 

.1 

Theory 

.2 

Low  explosives 

.3 

High  explosives 

.4 

Permissible  explosives 

.8 

Testing 

.9 

Handling  and  storage       See62:.f)32 

.238 

Blasting 

.1 

Theory 

.2 

Methods 

.3 

Loading 

.4 

Firing 

.9 

Testing  blasting  appliances 

.242 


.24  Boring       see  622.124,  622.23=^  and  622.523 

.241  Hand  boring 

1  Churn  borers      Spring  poles 

2  Rotary   borers 

21  Augers 

22  Diamond   drills 

23  Shot  drills 
Machine  boring 

1  Churn  borers 

11  Cable  drills 

12  Rod  drills 

13  Hollow   rod   drills 

131  Suction 

132  Jettings 

2  Rotary  borers 
21  Non-coring  drills 

211  Straight  bit  drills 

212  Auger  drills 


40  ILLINOIS   ENGINEERING   EXPERIMENT   STATION 


622.242.22 

Core  drills 

.221 

Serrated  ring  drills 

.222 

Diamond  drills 

.223 

Shot  drills 

.25 

Shaft  sinking     see  622.122  and  622.552 

.251 

Plant 

.252 

Sinking  through  firm  earth 

.253 

Forepoling 

.254 

Sinking  open  caissons 

.255 

Shield  methods 

.256 

Pneumatic  methods 

.257 

Freezing  methods 

.258 

Boring  methods 

.259 

Drilling  and  blasting  methods 

.26 

Tunnelling  and  drifting    see  622 

.261 

Plant 

.262 

Preliminary  operations 

.263 

Forepoling 

.264 

Forcing  forward  metal  linings 

.265 

Shield  methods 

.266 

Pneumatic  methods 

.267 

Boring  methods 

.268 

Drilling  and  blasting  methods 

.27 

Sloping      See  622.34 

.28 

Supporting  ground 

.281 

Timber 

.282 

Iron  and  steel 

.283 

Masonry 

.284 

Concrete 

.29 

.3  Working  of  mines     Exploitation 

.31  Open  workings 

.311  Open  cut  working 

.312  Stripping 

.313  Milling 

.33  Placer  workings       See  622.21 

.321  Small  scale  working  with  pan,  cradle  and  long  torn 

.322  Sluicing 

.323  Hydraulicking 

.324  Dredging 

.325  Cablcway   methods 


EXTENSION   DECIMAL  SYSTEM   OF   CLASSIFICATION 


41 


622.326 

Mechanical  shovel  methods 

.327 

Dry  placer  methods 

.33 

Methods  used  mainly  in  coal  mining 

.331 

Longwall  methods 

.332 

Room  and  pillar  methods,  including  panel  method 

.34 

Methods  used  mainly  in  metal  mining 

.341 

Overhand  stoping 

.342 

Underhand  stoping 

.35 

Working  thick  deposits 

.351 

Caving  method 

.352 

Filling  method 

.353 

Square  set  method 

.354 

Square  work  method 

.36 

Working  soluble  deposits 

.361 

Salt 

.362 

Copper  sulphate 

.37 

Working  fusible  deposits 

.371 

Sulphur 

.38 

Working  liquid  and  gaseous  deposits 

.381 

Water 

.382 

Petroleum 

.383 

Natural  gas 

.384 

Volcanic  emanations 

.39 

A 

Ventilation,  lighting  and  signaling 

.41 

Theory  of  ventilation 

.411 

Mine  atmospheres 

.1 

Gases      See  622.811 

.2 

Dust        See  622.812 

.3 

Humidity- 

.4 

Temperature 

.412 

Resistance  to  circulation  of  air 

.413 

Splitting  currents  of  air 

.42 

Natural  ventilation 

.43 

Mechanical  ventilation  without  fans  or  bloAvers 

.431 

Cowls 

.432 

Furnaces 

.433 

Steam  jets 

.434 

Waterfalls 

42  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 


022.44 

Fans  and  blowers     see  623  95 

.441 

Fans 

.1 

Disk    fans 

.2 

Centrifugal   fans     See  621.63 

.442 

Blowers 

.1 

Rotary   blowers     See  621.62 

.2 

Piston  blowers        See  621.61 

.45 

Airways,   stoppings,   regulators 

.46 

Lighting,   safety  lamps,  etc.     see  622.07s 

.48 

Signaling 

.5 

Drainage 

.51 

Theory  of  infiltration  of  water 

.511 

Surface  water 

.512 

Ground  water 

.513 

Deep  water 

.52 

Drainage  without  raising  water 

..521 

Natural  drainage 

.522 

Gutters 

.523 

Bore  holes      See  622.24 

.524 

Tunnels  See  622.26 

.53 

Pumps  actuated  by  surface  motors 

..531 

Rod  lift  pumps 

, 

1 

For  mines 

2 

For  deep  wells 

.532 

Cornish  pumps 

.533 

Bull  piuups 

.54 

Pumps  actuated  by  underground  motors 

..541 

Reciprocating  pumps 

1 

Station  pumps 

11 

Steam 

12 

Air 

13 

Electric 

.14 

Hydraulic 

.2 

Sinking  pumps 

.21 

Steam 

.22 

Air 

.23 

Electric 

.542 

Centrifugal  pumps 

.1 

Station 

.2 

Sinking 

.543 

Direct  displacement  pumps 

EXTENSION   DECIMAIv  SYSTEM   OF    CIvASSIFICATION 


43 


622.543.1  Steam 

.11  Pulsometers 

.13  Steam  jets 

.2  Air 

.21  Exhausting  air-pressure   pumps 

.22  Return-air  pumps 

.23  Air  lifts 

.55  Hoisting    of    water        See  622.65  and  622.67 

.551  Water  buckets  and  tanks 

.552  Water  shafts    See  622.25 

.56  Dams  and  water  tight  linings   see 622254 and 622.264 

.57  Handling  special  waters 

.571  Acid  waters 

.572  Hot   waters 

.58  Hand  pumps 

.59  Siphons 

.6  Extraction,  hoisting:  and  transportation 

.61  Handling  mineral  in  working  place 

.611  By  hand 

.612  By  machine 

.62  Underground  roads 

.63  Cars,  trams,  etc. 

.64  Transportation  by  gravity 

-641  Chutes 

.642  Batteries 

.643  Gravity  planes 

.644  Retarding  conveyors 

.65  Haulage  and  hoisting  by  men  and  beasts 

.651  Haulage 

.1  Wheeling  in  barrows 

.2  Tramming 

.3  Animal  haulage 
Hoisting 
Windlasses 
Whims 

Mechanical  haulage 

Rope   haulage      see  622.673  and  622.674 

.1  Theory 

.2  Haulage  engines 


.6.52 


.66 
.661 


44  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 


G22.661.3 

Engine  planes 

.4 

Endless-rope  haulage 

.5 

Tail-rope  haulage 

.662 

Locomotive  haulage 

.1 

Theory 

.2 

Steam  locomotives 

.3 

Compressed   air  locomotives 

.4 

Oil  locomotives 

.5 

Electric   locomotives 

.67 

Mechanical  hoisting 

.671 

Theory 

.672 

Hoisting  engines 

.1 

Steam  hoists 

.2 

Compressed  air  hoists 

.3 

Oil  hoists 

.4 

Electric  hoists 

.673 

Drums,  reels,  clutches  and  brakes 

.674 

Ropes  and  chains 

.1 

Manila  ropes 

.2 

Wire  ropes 

.3 

Chains 

.675 

Head  frames 

.1 

Timber 

.2 

Steel 

.676 

Hoisting  systems 

.1 

Unbalanced  hoisting 

.2 

Balanced  hoisting 

.3 

Koepe  system 

.4 

Whiting  system 

.68 

Cages,  skips,  buckets,  slope  c 

.60 

Surface  transportation  includ 

wire  ropeways,    transhipment,  loading    and 

unloading.  (See  622  99) 

.691  Wagon  roads 

.692  Railways 

.693  Aerial  tramways 

.694  Telphers 

.698  Loaders 

.699  L^nloadcrs,  dumps,  etc. 

.7  Mechanical  preparation     Ore  dressing: 

.71  Theory       Preliminary  operations 

.72  Hand  dressincr    s.-.>  (.22.781 


EXTENSION  DECIMAL  SYSTEM   OF    CLASSIFICATION 


45 


622.73 

Crushing        see  622.782 

.731 

Theory 

.732 

Hand  breaking 

.733 

Mechanical  breaking 

.1 

Jaw  breakers 

.2 

Spindle  breakers 

.734 

Crushing 

.1 

Rolls 

.2 

Roller  mills 

.3 

Stamps 

.4 

Impact  pulverizers 

.5 

Ball  mills  and  tube  mflls 

.6 

Arrastras  and  grinding  pans 

.74 

Screening    see  622.783 

.741 

Theory 

.742 

Perforated  metal  and  wire  cloth 

.743 

Grizzlies 

.744 

Shaking  screens 

.745 

Pulsating  screens 

.746 

Trommels 

,747 

Belt  screens 

.75  Wet  concentrating  machines       Ore  concentrators 

See  622.77  and  622.784 

.751  Theory 

.752  Disintegrators 

.1  Trough  washers 

.2  Log  washers 

.3  Wash  trommels 

.4  Washing  pans 

.753  Hydraulic  classifiers 

.1  Free-settUng  classifiers 

.11  Carrying-current  classifiers 

.111  Buddies 

.112  Rififles,  canvas  tables,  etc. 

.113  Box  classifiers 

.114  Settling  boxes  and  ponds 

.12  Hydraulic-current    classifiers 

.121  Trough 

.122  Pocket 

.123  Tubular 

.2  Hindered-settling  classifiers 

.21  Wolf-tongue  classifiers 

.22  Pulsator  classifiers 

.754  Jigs 

.1  Hand 


46  ILL,INOIS    ENGINEERING    EXPERIMENT    STATION 

622.754.2  Power 

.21  Pan 

.22  Piston 

.23  Pulsator 

.755  Tables 

.1  Agitation  sizing  tables 

.11  Bumping 

.12  Jerking 

.2  Film  sizing  tables 

.21  Fixed 

.22  Moving 

.756  Vanners 

.1  Side-shake 

.2  End-shake 

.76  Slime  treatment     see  022.75 

.77  Concentration  by  other  means  than  wet  concen- 
tration 

.771  Pneumatic  concentration   See  682.785 

.772  Oil  concentration 

.773  Flotation 

.774  Magnetic  separation 

.775  Electrosctatic   separation 

.776  Disintegration   and   screening    See  o22.78 

.78  Preparation  of  coal   see  622.71 

.781  Picking     See  622.72 

.1  Hand 

.2  Mechanical 

.782  Crushing     See  622.73 

.1  Jaw  breakers 

.11  Saucrman 

.12  Roll  and  jaw 

.2  Rotary   crushers 

.3  Rolls 

.31  Toothed 

.32  Corrugated 

.33  Smooth 

.4  Impact  pulverizers 

.41  Hammer 

.42  Disintegrator 

.7S3  Screening     See  622.74 

.1  Trade  sizes 

.2  Bar  screens 

.3  Shaking  screens 

.4  Revolving  screens 

.784  Washing     See  622  75 


EXTENSION   DECIMAL   SYSTEM   OF    CLASSIFICATION 


47 


622.784.1 

HyrauHc  classifiers 

.11 

Carrying-current   classifiers 

.111 

Grading  boxes 

.112 

Trough  washers 

.12 

Hydraulic-current  classifiers     Tub  washers 

.2 

Jigs 

.21 

Pan 

.22 

Piston 

.23 

Compartment 

.3 

Tables 

.32 

Bumping 

.33 

Jerking 

.785 

Pneumatic  concentration    See  622.771 

.786 

Concentration    by    crushing    and    screening 
pulverizers     See  622.776 

Bradford 

.787 

Coking    See  644.22,  622.7  and  669.8 

.1 

Theory 

.2 

Open  pits 

.3 

Beehive  ovens 

.4 

Longitudinal  ovens 

.5 

Gas  retorts 

.6 

By-product  ovens 

.788 

Briquetting 

.1 

Peat 

.2 

Lignite 

.3 

Bituminous  coal 

.4 

Anthracite 

.5 

Coke 

.789 

Coal  preparation  plants     See  622.79 

.1 

Tipples 

.2 

Breakers 

.3 

Washeries 

.4 

Coking  plants 

.5 

Briquetting  plants 

.79 

Mineral  preparation  plants    see  622.789 

.791 

Rock  houses,   shaft  houses 

.792 

Patios 

.793 

Concentrating  mills 

622.8 

Dangers  and  accidents 

.81 

Explosions,  see  G22.82 

.811 

Marsh  gas  explosions 

.1 

Theory 

.2 

Causes 

.3 

Actual  cases 

.4 

Preventive  measures 

.812 


Coal  dust  explosions 


48  ILLINOIS    EXGINEERING    EXPERIMENT    STATION 

622.812.1  Theory 

.2  Causes 

.3  Actual  cases 

.4  Preventive   measures 

.82  Mine  fires    see622.8i 

.821  Timber  fires 

.1  Theory 

.2  Causes 

.3  Actual  cases 

.4  Methods   of   extinguishment 

.5  Preventive  measures 

.822  Gob  fires 

.1  Theory 

.2  Causes 

.3  Actual  cases 

.4  Methods  of  extinguishing 

.5  Preventive  measures 

.823  Fires  in  coal 

.1  Theory 

.2  Causes 

.3  Actual  cases 

'.4  Method  of  extinguishment 

.5  Preventive  measures 

.824  Fires  in  sulphide  ore 

.1  Theory 

.2  Causes 

.3  Actual  cases 

.4  Methods  of   extinguishment 

.5  Preventive   measures 

.83  Crushing  and  falls  of  ground 

.84  Flooding  of  mines                                                             . 

.85  Accidents  to  miners 

.851  Accidents  due  to  falls  of  ground    See 62283 

.852  Accidents  due  to  explosives  and  blasting 

.853  Haulage  accidents 

.854  Hoisting  accidents                                                                                 i 

.855  Accidents  due  to  machinery                                                               ' 

.856  Electric   shocks 

.857  Falling  down  shafts,  chutes,  etc. 

.858  Accidents  due  to  explosions  and  fires     See  022.81  .-iiul  ()22.j<2 

.859  Miscellaneous  accidents 

.86  Rescue  and  relief 

.861  Mine  rescue 

.1  Apparatus 

.2  Systems 


EXTENSION   DECIMAIv  SYSTEM   OF    CI.ASSIFICATION 


49 


622.861 


.3 

Actual  cases 

862 

First  aid 

.1 

Outfits 

.2 

Methods 

.3 

First  aid  teams 

867 

Doctors 

868 

Hospitals    See  622  975 

869 

Miners'  insurance  and  compensation 

.87 


Sicknesses  of  miners 


S 


Surface  plants       See  622.7S9  and  622.79 


.91 

Offices 

.911 

General  ofifices 

.912 

Mine  offices 

.92 

Storehouses  and  yards 

.921 

General    storehouses 

.922 

Powder   houses 

.923 

Tool  houses 

.924 

Oil   houses 

.925 

Lamp  houses 

.936 

Yards  for  lumber  and  other  combustibles 

.937 

Yards  for  steel  and  other  non-combustibles 

.93 

Shops 

.931 

Blacksmith  shops 

.932 

Machine  shops  and  foundries 

.933 

Carpenter  shops  and  sawmills 

.94 

Power  plants 

.941 

Steam  plants 

.942 

Compressed  air  plants 

.943 

Electric  plants 

.95 

Fan  houses 

.96 

Stables 

.97 

Buildings  for  employees 

.971 

Change  houses,  wash  houses,  dry  houses,  shift 

houses 

.972 

Club  houses 

.973 

Dwellings 

.974 

Stores 

.975 

Hospitals 

50  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

622.98  Fire  protection 

.99  Arrangement  of  surface  i:)lants     see  622.69 

623  Military  and  Naval  Engineering 
.8            Naval  architecture 

624  Bridge  engineering     Arches 

Construction  in  wood,  stone,  and  metal 
This  classification  includes  whatever  concerns  the 
methods  and  principles  of  construction,  so  that  th? 
computations  and  technical  conditions  may  be  es- 
tablished, or  the  way  the  movable  parts  act  on 
each  other  For  architectural  features  see  "20, 
Architecture 

624.0         General 

Subdivisions  of  624.0  may  be  combined  with  the  fol- 
lowing subdivisions,  624.1 — 624.9,  for  specifying 
details  of  construction   under  consideration 

.01  Classification  of  bridges  according  to  the  charac- 

acter  of  the  material  used 

•Oil  Wooden  bridges 

(1  Wooden  pile  bridg'es;  2  bridges  on  stone  piers;  3  bridtres  covered 
with  iron) 

.012  Masonry  bridges 

(1  Stone  bridg-es;   2  brick  bridges;  3  bridges  of  concrete,  plain  and 
reinforced) 

.013  Metal  bridges  on  stone  piers 

(1  Cast  iron  bridges;    2  iron  and  steel  bridges) 

.014  Bridges  entirely  of  metal 

(1  Bridges  of  cast  iron;    2  bridges  of  iron  aiul  stet-l ) 

.02  Classification  of  l)ridges  according  to  purpose 

.021  Bridge  sidewalks  for  foot  passengers 

.022  Road  bridges 

(1  Carriage  bridges:     2  railway  bridges;     abridges  with  iimre  than 
one  track;    4  bridges  with  more  than  one  story) 

.023  Viaducts 

.024  Canal  and  aciueduct  I)ridges 

.025  Tunnel  bridges 

.026  Sluice  and  toll  bridges 

.027  Movable  and  turning  bridges 

.028  Military  and  temporary   bridges 

(1  Wooden  emergency  bridges;  2  trestle   briilges;  3  pontoon  bridges; 
4  portal)le  metallic  bridj;es) 

.03  Classification  of  bridges  according  to  outline  or 

type 


EXTENSION    DECIMAL   SYSTEM    OF    CLASSIFICATION 


51 


624.031 
.032 
.033 
.034 
.03.5 
.036 


.041 
.042 


.043 


.044 
.045 

.05 

.051 
.052 
.053 

.054 

.055 
.056 

.057 
.058 

.06 
.061 

.062 


Right  bridges 

Skew   bridges 

Curved  bridges 

Single  span  bridges 

Bridges   of  multiple  independent  spans 

Bridges  of  continuous  spans 

Determination  and    computation    of    component 
parts  of  bridges 
See  also  620.1 — Resistance  of  materials 

Establishment  of  the  general  outline       Working  drawing 
Computation  of  loads,  dead  and  alive 

Permanent   loads,   accidental   loads,  trial   loads,   wind 
loads,  temperature  stresses 
Computation  of  the  dimensions 
Dimensions  of  arches 

(11  Curve  ot  pressure;     12  diagram  of  stability) 

Dimensions   of    timber   work 
(21  Main  tiniter.-,;     22  accessor}  members;     23  wind  bracinp) 

Dimensions   of  piles   and   abutments 
Computation   of   deformation     Flexure,    curve    of   defor- 

ation 
Computation   of  weight   and  cost 
(1  Weight  of  Parts;     2  net  price) 

General    conditions    of    location         Methods    of 
construction 
Determination  of   site       Study  of  soil 
Location  of  approaches 
Choice  of  type     Fixing  the  principal  dimensions     Height 

Width 
Determination    of    the    waterway        Estimating   the    flow 

Computation  of  eddies 
Organization  of   work  yards      Excavation   and   removals 
Preparation  of  component  parts  Assemblage        Stone 

cutting 
Erecting,   scafifolds,  launching 
Trials,  tests 

Masonry  vaults  and  arches  Various  types 
Names  according  to  rise  or  direction  Right  arches 
Skew  arches  Descending  arches  Full  centered 
arches  Flat  arches  Ascending  arches 
Cylindrical  arches  Vaulted  arches  Names  according 
to  profile  Circucan  arches  Basket  handled  or 
oval  arches  Elliptical  or  parabolic  arches  Pointed 
arches 


52  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

624.0G3  Penetrating  arches    Vaulted  arches  with  lunettes     Grom 

arches     cloistered  arches       Cloistered   arches  with 
plastered  covering 
.064  Ring  arches,  vaulted  or  descending 

.065  Spherical    vaults        Simple    domes        Domes    of    cupola 

lights        Partly     cylindrical    niches        Overhanging 
arches        Back-covering 

.07  Constituent  parts       Methods  of  construction 

.071  Intrados,   Estrados,   Soffit,   Spandell 

.072  Voussoir,  or  keystone      Height  or  rise      Keys      Counter 

keys        Bed    joints       Rising  joints       Bearings   or 
springers 
.073  Supports  Upright   pillars    or   props       Drums       Pen- 

dentives 
.074  Construction  of  arches,  centering  and  scaffolding       Ma- 

sonry work       Dressing  and   laying  stone       Strik- 
ing the  centers        Complementary  work        Coping 
Spandrel       Filling  up 
.075  Computation  and  diagrams  of  arches 

.1  Computation  of   weight  and  loads 

■2  Diagrams  of  arches 

(21  Curve  of  the  intrados;     21  depth  of  the  keystone) 

.3  Thickness  of  piers 

•4  Equilibrium  polygon 

.5  Weight  diagram 

■6  Computation  of  weights 

.08  Trussed  girders       Component  parts  and  compu- 

tations 
.081  Parts  of  trusses  in  ordinary  wood       Principal   rafters, 

ties,    struts,     tie-beams,    braces        False     tie-beams 

Hammer  beams      Purlins      Brackets        Wallplates 

Ridge-pole    Luths 
.082  Special  parts  of  trusses  of  jointed  wood,  curved,  or  of 

great  span 
.083  Parts  of   metal   trusses 

.084  Parts   of   composite   trusses 

•085  Computation  of  loads  and  reactions 

.086  Computation  of  dimensions  of  parts 

.087  Computation  of  weight 

.1  Piers  and  abutments     Foundation  work 

.11  Foundations       Generalities       Nature  of  the  soil 

See  also  721.1,  Foiuidations  in  general 
•111  Dry   foundations 

.112  Foundations   by   draining 


EXTENSION  DECIMAL  SYSTEM   OF    CLASSIFICATION 


53 


624.113 
.114 


,115 


.12 
.121 
.122 


.1 
.2 
.3 

.4 


.123 

.13 
.14 

.141 
.142 
.143 
.144 
.145 

.15 

.151 
.152 
.153 

a 

.21 

.211 

.212 
.213 

.214 
.215 

.22 

.221 


Sunk  concrete     Cribs  and  frame  foundations  in  general 
Foundations  on  piling 

In  river  beds       Platforms  and  open  caissons 

Foundations  in  soft  earth 

Metal  piers 
Foundations  by  compressed  air 

Tubular  caisson  foundation  in  river  beds 

Foundations  in  ground 

Movable    caissons       Montaigue    system 

Abutments 
Abutments   for  wooden  bridges 
Abutments  for  masonry  bridges 

Dressing  the  abutments 

Abutments    of   loose    stones 

Wing  walls       Curved  walls 

Hollow    abutments 
Abutments   of  metal  bridges 

Wooden  piles       Stakes 
Masonry  piles 

Piles  of  uniform  strength 

Cut-waters 

Preparation  of  the  piles 

Hollow  piles 

Piles  for  floors      Piles  for  bridges 

Metal  piles 
With  four  uprights 
With  more  than  four  uprights 
Piles  of  uniform  strength 

Beams     Floors  of  bridges     Shapes  and  arrangement 

Wooden  bridges 
Primitive  arrangements      Simple  beams     Without  beams 

Spurs 
Floors   of   beams 
Trussed   beams    and    spliced   beams       For    arch   bridges 

see  624.61 
American   lattice  bridges       Towne's  system 
American  like  St.  Andrews  cross       Howe  system 


Bridges  of  metal  construction 
beams       American  trusses 
Simple  metal  trusses 
Trusses  with  rigid  joints 
Trusses  with  solid  core 


Iron  and  steel 


54  ILLINOIS    ENGINEERING   EXPERIMENT    STATION 

624.22L3  Lattice  trusses 

.4  Side  pieces  and  crosses  of  St-  Andrew 

.222  Trusses  of  concrete  and   reinforced  concrete 

.223  American  trusses  with  jointed  connections 

.1  Simple   American    trusses 

(U  The   Warren    triangrular  system:     12  the  Howe  system:     13 
the  Pratt  and  Whipple  systems;   14  protected  trusses) 

.2  Composite  American  trusses 

(21  Warren  multiple  system:    22 Lin ville  system;    23  Poat  sys- 
tem;  24  the  Bollman  system) 

.3  Compound   American   truss 

(31  The  Warren  system;    32  the  Pratt  or  Pettit  system;    33  the 
Howe  system;  34  the  Funk  system) 

3  Metal  lattice  bridges     Different  kinds 

.31  \\'ith  trusses  of  constant  height    Ordinary  lattice 

.32  ^^'ith  variable  height  or  bowstring 

.33  Cantilevers 

.34  With  joints  or  crane  bridges 

.4  Metal  tubular  bridges 

.5  Suspension  bridges     Different  kinds     parts 

.51  General  arrangement       Different  types 

.511  Bridges  with  flexible  hangers 

(1  With  sinjfle  panel;   2  wiih  several  panels:    3  with  auxiliary 
trusses;   4  with  stays) 

.512  Bridges  with  rigid  hangers 

.1  With  parabolic  cable  and  straight  beams 

.2  With  cable  and  parabolic  beams 

.3  With  parabolic  cable  and  horizontal  stringers 

.52  Suspension  chains  and  cables 

,521  Main  cables 

.522  Reserve   cables 

.523  Anchorage  cables 

.524  Suspension  chains  and   rods 

.53  Floors 

.54  Piers       Towers 

.55  Abutments       .\nchorages 

.6  Arch  bridges     Different  kinds 
.01  Wooden  bridges  of  one  or  more  spans 

.02  Masonry  liridges  of  Diie  or  more  spans 

.(521  Stone   bridges 

.622  Brick  bridges 

.623  Plain  and  reinforced  concrete  bridges 


EXTENSION   DECIMAL  SYSTEM   OF    CLASSIFICATION 


55 


624.63 

.64 
.65 

.651 
.652 
.653 

.66 

.661 
.662 
.663 

.67 

.7 

.71 

.72 
.73 
.74 

.8 

.81 
.82 
.83 
.84 
.85 
.86 
.87 
.88 

.881 
.882 
.883 
.884 

s 


.91 

.911 
.912 
.913 


Cast  iron  bridges  on  masonry  piers,  with  one  or 

more  spans 
Bridges  entirely  of  cast  iron 
Steel  and  iron  bridges  on  masonry  piers 

Single  span  bridges 

Independent  span  bridges 

Continuous  bridges 

Steel  and  iron  bridges  on  metal  piers 
Single  span  bridges 
Independent  span  bridges 
Continuous   bridges 

Bridges  with  elevated  arch 

Bridges  of  composite  construction 

Bridges  of  nnlike  spans  in  masonry  and  metal 
Bridges  and  viaducts  with  superimposed  spans 
Metal  bridges  with  several  types  of  span 
Bridges  with  floor  raised  with  lifts 

Movable  and  shifting  bridges     Methods  of  operation 

Draw  bridges  (pont-levis) 

Swing  bridges 

Bascule  bridges 

Trunion  bridges 

Rolling  bridges 

Bridges  shifting  in  the  air 

Jack-knife  bridges 

Agencies  for  operating  movable  bridges 
Movement  by  hand 
Movement  by  hydraulic  power 
Movement  by  steam 
Movement  by  electricity 

Roofs  and  framing     Vawlts 

Construction  adapted  to  considerable  spans 
See  also  695.    coverings  and  721.5  dwelling's 

Types  of  roofs 
Roofs  of  trusses 
Mansard  roofs 
Roofs  of  curved  beams 


56  ILWNOIS    ENGINEERING    EXPERIMENT    STATION 

624.914  Roofs  of  great  span 

(1  With  wooden  trusses;      2  with  metal  trusses;     3  with  com- 
bined wood  and  metal  trusses) 

.93  Vaulted  edifices  of  masonry 

.921  Buildings    of    one   nave 

.922  Buildings  with  coupled  naves        Aisles 

.93  Buildings  of  great  width  in  masonry  and  in  metal 

Public  halls,  etc. 
.94  Buildings  entirely  of    metal       Halls       Markets 

Exposition  buildings 
.95  Various  metal  construction    Scaffolding    Towers 

625  Railway  and  road  engineering 

A  Railways     Roadbed  and  work  of  construction 

.11  The  survey  and  location 

.111  Preliminary    studies         Plans         Special     features     of 

drawings   (stations,  branches,  stonework,  crossings 

on  a  level,  tunnels) 
.112  Extent  of  the  road 

.113  Longitudinal  profile      Grades       Curves 

.114  Cross-sections       Computation  of  earthwork 

.12  Sub-grade 

.121  Acquisition    of    land 

.122  Buildings   and   consolidating  the   embankments 

.123  Drainage  of  the  foundation  bed 

.13  Stone   work,   bridges   and   tunnels       Ventilation 

of  tunnels 
.14  The  track 

.141  Ballast 

.142  Supports   (ties,  etc.) 

.1  General  principles        Longitudinal  and  tranverse  soli- 

tary supports      Comparison 

.2  Supports  of  wood 

.3  Supports    of   metal 

.4  Supports  of  reinforced  concrete 

.5  Supports  of  stone 

.143  Rails  and  rail  attachments 

.1  Forms  of  rails      Weight  of  rails 

,2  Quality  of  metal  in  rails         Conditions  of  manufacture 

Tests 

.3  Wear  and  breakage  of  rails 

.4  Joints  of   rails        Fish  joints 

.5  Attachment  of  rails  to  supports      Creeping 


I 


EXTENSION   DECIMAL  SYSTEM   OF   CLASSIFICATION 


57 


625.144  Laying  the  track 

.1  Width  and  position  of  joints      Length  of  rails 

Spacing  the  cross  bars 
.2  Excess  gauge  and  superelevation    (bending)       Laying 

track  on   curves 
.3  Splices 

.4  Operation  of  track  laying 

Equipment  of  the  track 
Branches    (switches,   frogs,  switch  blocks) 
Crossings 
Junction-crossings 
Turntables  and  swing  bridges 
Car  rollers  or  shifters 
Various  accessory  appliances   (bufifers,  cyclometers,  etc.) 

Secondary  installations 
Sheds  and   watchman's  houses        Section   houses 
Right-of-way  fences  and  bars  at  grade  crossings       Set- 
ting land  marks 
Cultivation  and  planting 
Snow  screens 
Approaches 


.15 
.151 
.152 
.153 
.154 
.155 
.156 

.16 
.161 
.162 

.163 
.164 
.165 

.17 

.171 
172. 


.173 

.174 
.175 
.176 

.18 
.19 


Maintenance  and  renewals 


Condition  of  the  road       Dudley 
Maintaining    the    joints        Dyna- 


Care  of  the  road 

Inspection      Control 
Current  maintenance 

dynamometer 

mometer  cars 
Repairs  and  renewals 
Clearing  away  snow 
Velocipedes  for  track  inspection 
Changing  the  alignment 

Stores       Road  materials       Accounts 


♦2  RoIIingf  stock          (For  locomotives,  see  621.13) 

.205  Periodicals;  .206  Societies;  (Am.  Assn.  of  Master  Car  Builders) 

.21  Cars  and  carriages,  principal  parts  of 

.211  Frames 

.212  Axles      Wheels      Tires      Balancing  of  wheels 

.213  Suspension 

.214  Provisions   for  lubricating      Lubricants 

.215  Trucks       Radial  and  convergent  axles 

.216  Couplers  and  buffers      Draft  gears 


58  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

625  22  Cross  section  of  cars       Clearance  of  bridges  and 

tunnels       Influence   of    length   of   cars    on 
curves 
.23  Passenger  cars 

.23  Types    and    comparison     of     types       Seating     capacity 

Weight 
.231  Compartment  cars 

.232  Corridor  or  vestibuled  cars      Parlor  cars      Sleeping  cars 

Dining  cars,  etc. 
.233  Lighting  of  cars 

,234  Heating  and   ventilation   of  cars         Sanitation 

.24  Freight  cars 

.24  Generalities       Capacity       Weight 

.241  Flat  cars 

.242  Hopper  and   dumping  cars 

.243  Closed  and  covered  cars 

.244  Refrigerator   cars 

.245  Special  cars     Dynamometer  cars     (See  o5o.22i.7) 

.246  Details  of  construction      Use  of  steel  in  construction 

.247  Carunloaders        Miscellaneous    unloading    and    dumping 
devices 

.25  Brakes     Hand,  automatic,  continuous,  etc.     Air 

brakes 
.26  Car  repair  shops 

.27  Supplies        Materials 

.3  Inclined  and  mountain  railways 

.4  Elevated  and  underground  railways     Subways 

,5  Cable  roads 

«6  Tributary  railways  or  feeders     Street  railways 

.61  Triljutary  railways  from  a  technical  standpoint 

.»j11  Traffic*  taxes;  .612  administration  and  operation:  .613  sub 
grade;  .614  track  and  track  eiiuipment;  .615  stations;  .616  mot- 
ive power;     .617  rollinc  stock 

.62  Street  railways       Tramways 

.63  Traction  systems 

.7  Roads  and  highways     Country  roads  and  city  streets 

.71  Varieties  of  ordinary  roads,  according  to  the  im- 

portance or  purpose 
.711  Rural  roads,  wide  nr  narrow 

.712  Town  roads 

(1  Thoroughfares,  avenues,  boulevards;    2  narrow  streets,  alleys: 
3  covered  ways;    4  squares;    5  promenades  and  public  gardens-) 


EXTENSION   DECIMAL   SYSTEM    OF    CLASSIFICATION 


59 


625.72 

.721 
.722 
.723 
.724 
.725 
.726 

.73 


.74 


.741 


.742 
.743 


.744 
.745 


.751 

.752 
.753 

.76 

.761 
.762 


.763 
.764 
.765 
.766 

.767 


Surveys  and  maps  of  routes 
Drafting 

Staking  out   the  line 
Longitudinal   profile 
Curve  notes 
Leveling 
Computation  of  excavation  and  embankment 

Various  features  of  the  route     Roadbed     Cross- 
sections 

(1  Cross-sections;  2  carriag-e  ruts,  crowning',  inclines;  3  equip- 
ment; 4  sidewalks;  5  drains;  6  slopes;  7  retaining  walb; 
8  parapets) 

Method     of     road     construction        Construction 
equipment 
General  questions 

Flag  stones       Stone  pavements      Wooden  pavements 
Macadam  roads       Monolithic  roads       Cement,  as- 
phalt, gavel  and  earth  roads 
Equipment  earth  roads,  macadam  roads,  paved  roads 
Sidewalks,  macadam,  paved,  flagging,  brick,  tiling,  sand- 
stone, asphalt,  wood 
Curbing 
Accessory   construction 

(1  Bridges  and  culverts;  2  aqueducts;  3  manholes;  4  drains;  5 
protection  stones;  6  mile  stones,  sign  posts;  7  cultivation;  8 
lighting,  lamp  posts;    9  other  features) 

Construction  work 

Substructure         Embankment         Haul         Shaping     the 

cross-section 
Roadway       Work  of  consolidation 
Accessory  work 

Maintenance  of  way 
Maintenance   of   paved    streets       Replacing   worn    stones 
Maintenance   of   macadam   roads 
The  continuous  repair  method     Closing  to  travel     Ex- 
cessive   sweeping         Method    of      making      repairs 
Use  of  material,  of  concrete 
Periodical   ballasting       Various    methods 
Rolling 

Tarring   or  oiling  the   road 
Maintenance  of  wooden  roads 
Maintenance  of  monolithic  or  concrete   roads. 
Maintenance  of  asphalt  roads 
Maintenance  of   foot  paths 
Maintenance  of  cycle  tracks 


00  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

625.76S  Current  minor  details  of  maintenance 

,1  Sweeping       Use  of  brooms       Wheel  sweepers 

.2  Scraping  and  removing  wash  water 

.3  Removal  of  filth 

.4  Removal  of  dead  leaves  and  other  debris 

.5  Removal  of  snow       Cleaning  by  salt 

.6  Sanding  and  ice  removal 

.7  Sprinkling       Use  of   sprinklers,  hose,   water  columns, 

sprinkling   costs 
.8  Lighting 

.9  Other  maintenance  work 

.77  Planting  trees  and  shrubs  along  the  roads 

.771  Conditions  to  be  observed       Ways  of  planting       Single, 

double  or  multiple  rows      Spacing  the  trees 

.772  Choice  of  species       Species  used 

.773  Operation  of  planting      Trenches      Transplanting    Nur- 

series 

.774  Maintenance  and  protection   of  vegetation 

.78  Sanitation  applied  to  streets  and  roads 

.79  Other  work  connected  with  roads 

.8  Paving    stone,    paving         Macadamizing  and   other 

methods  of  consolidating  roads 

.81  Paving  stone 

.811  Stones  used      Different  kinds      Granite,  limestone,  mar- 

ble,   etc. 
.812  Splitting  and   dressing  paving  stone 

.813  Puttin  ■    in  place 

.82  Stone  p-.veinents 

•821  Stone  used       Granite       Sandstone       Porphyry       Other 

hard  stone 

.822  Preparing  the  stone 

.823  Making  the  stone  pavement 

.1'  The  sand  foundation 

.2  Layers  of  stones       Curbs       Old  pavements 

.3  Setting  the  stone 

.4  Crossings 

.8.T  Wooden  pavements 

.831  Wood  used       Pine       Hardwood 

.832  Preparation  of  the  pavement 

.833  Making  the  pavement 

Staking  out  Fixing  the  profile  of  the  concrete 
foundations  Concrete  foundations  Laying  the 
pavement 


EXTENSION   DECIMAL   SYSTEM   OF    CLASSIFICATION  61 

625.84  Concrete  roads 

.85  Asphalt  roads 

.86  Stone  covered  roads 

.861  Materials     used       Crushed     stone       Limestone       Flint 

Quartz        Sandstone,    granite       Hornblend       Por- 
phyry       Trap,  basalt  and  lava      Waste  from  pot- 
teries 
.862  Preparation  of  materials       Crushing  the  stone       Crush- 

ing by  hammers       Crushers       Storing 
.863  Applying  the  metal  covering 

.1  Method  of  Tressaquet 

.2  Macadamizing 

.3  Method  of  Poloncease 

.4  Metal  on  foundations 

.5  Metal  without  foundation 

.6  Diagonal  waterways       Catchbasins 

.7  Rolling       Rollers,  hand,  horse,  steam 

.87  Metallic  roads     Roads  of  vitreous  stone      Roads 

of  reinforced  stone 
.88  Establishment  of  side  walks,  curbing,  flagging 

.89  Other  work  connected  with  paving 

.9  Other  means  of  transportation  on  land 

.91  Ship  railways 

.92  Transportation  by  aerial  cables 

626  Canal  engineering 

627  River,  harbor  and  general  hydraulic  engineering 
A  Rivers       Force  of  water       Discharge       Bars 

,2  Harbors       Breakwaters 

.3  Docks,  piers  and  quays       Shipping  facilities 

.4  Dikes  and  levies       Embankments 

.5  Other  protection  and  reclamation  of  land  from  tides 

and  waves      Drainage 

.6  Jetties 

♦7  Dredging       Dredging  machinery 

.8  Dams 

.9  Light-houses       Buoys 


62  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

628  Sanitary  engineering      Waterworks 

Use  same  form  divisions  asunder  020 
.{  Water  supply  of  towns      (For  isolated  water  supply  see  02s  7) 

.11  Sources  of  water  supply:     lakes,  rivers,  springs, 

wells  and  pumping 
,12  Pumping    vs.    gravitation   systems :      pump-well, 

stand-pipe  high  ser\'ice       Holly  system 
.13  Storage  and  service  reservoirs 

,14  Conduits       Aqueducts       Tunnels 

.15  Mains  and  service  pipes     Freezing     Iron     Lead 

.16  Impurities  and  their  removal      Filter-basins,  etc. 

.17  Public    (sprinkling,  fire,  flushing),    manufactur- 

ing, and  domestic  use  and  waste       Meters 

.2  Sewerage  works 

.21  Sewerage  systems 

.211  Combined  system 

.212  Separate  system 

.213  Liernur  system 

.214  Shone  systems 

.215  Berlier  system 

.216  Other  systems 

.217  The  outfall 

.218  Depth  and  alignment 

.219  Grade  and  velocity 

.22  Shape  and  size  of  sewers 

(1  storm  water  How;  2  ordinary  flow:  3  circular  section;  4  ordinary; 
egg'-shape;    5  other  egtr-shapcs;    6  other  forms; 
8  formulas  for  size) 

.23  Ventilation  of  sewers 

(1  openings  in  streets;  2  lamp  posts;  3  flues  in  houses;  4  pipes  on 
houses;  5  house  drains;  (>  chimneysand  furnaces;  7  charcoal 
and  chemicals  to  deodorize  sewerage  gas;  8  special  mechanism; 
•9  special  construction) 

.24  Design  and  construction  of  sewers 

.25  Sewer  appurtenances 

(1  innctions;  2  house  connections;  3  manholes  and  lampholes; 
4'nushing  shafts  and  fixtures;  5  catch  basins  and  inlets:  o  traps 
and  vcniilaior-;  7  valves  and  penstocks;  S  overflows  and  regu- 
lators;    0  miscellaneous) 

.20  River  crossings 

.27  Intercepting  and  outfall  sewers 

.28  Reservf)irs  and  tank  sewers 

.20  T^iinii)ing  stations 


EXTENSION    DECIMAIv   SYSTEM    OF    CLASSIFICATION 


63. 


628.3 


.31 

.32 

.33 

.34 


.30 


.37 

.38 
.39 

A 

AT 
.42 
.43 
.44 
.45 
.46 
.47 
.48 
.49 

628.5 

.51 

.52 

.53 

.54 


Disposal  of  Sewage 

Physical  properties  of  sewage 

Deoclorization    and    disinfection    of    solids     and 

liquids  (Seeois.237) 

Subsidence 
Precipitation 

(1  precipitation  tanks;  2  mixing  machinerj;  3  filter  presses;, 
4  precipitation  bv  salts  of  alumina;  5  by  lime;  6  by  salts  of  iron;, 
7  by  other  methods;     8  disposal  of  sludge;     9  miscellaneous) 

Filtration 
Irrigation 

(1  broad  irrigation;  2  ridge  and  furrow  irrigation;  3  fiat  bed 
irrigation;  4  sub-suface  irrigation;  5  intermittent  downward 
filtration;  6  carriers  and  appurtenances;  7  drains  and  drainage 
OH  sewage  farms;     8  filtration  areas;     9  miscellaneous) 

Sewage  farming      Required  modifications  of  or 

dinary  methods 
Sewage  manures 
Discharge  into  sea,  etc. 

Sanitation  of  towns 
Middens  and  privies 
Pail  system 
Earth  closet  systems 
Domestic  ashes  and  garbage 
Public  urinals  and  latrines 
Street  cleaning  and  sprinkling 
Pavements  and  subways 
Trees  in  streets  and  squares 
Manufacture  of  fertilizers  from  town  waste 

Industrial  sanitation 

Factories  and  trades  ,    ■ 

(1  prevention  of  dust  and  fumes;  2  protection  of  throat  and  eyesr 
3  protection  against  infection;     9  special  trades) 

Effluvium  nuisances 

(1  situation  of  works;  2  use  of  high  chimneys;  3  condensation  in 
water;    4  combustion  in  furnaces;     9  special  trades) 

Smoke  nuisance 

(8  From  steam  generators;     o  Prom  special  industries) 

Disposal  of  solid  and  liquid  wastes 

(1  discharge  into  streams;  2  absorbing  wells  and  burial;  3  clarifl 
cation  by  subsidence;  4  cbemica  1  treatment;  5filtration:  6  purii 
fication  by  the  soil;     9  special  methods  and  special  trades) 


64  ILUNOIS    ENGINEERING    EXPERIMENT    STATION 

628.6  House  drainage 

.7  Rural  water  supply       Villages  and  country  houses 

.8  Ventilation  and  heating      (See  697, 628.23) 

Thi-i  head  is  chiefly  for  ventilation.     Most  matter  on  heating  goes 
in  047 

.9  Lighting               (Se  ■  021.32. 537..S3) 

650  Communication     Commerce 

65  J  Office  equipment  and  methods 

652  Writing      Materials      Typewriters 

653  Stenography 

654  Telegraphy        (Fortelegraphand  teIephoneenf,nneering  see  621.38) 

.6  Telephones 

655  Printing  and  publishing 

656  Transportation      Operation  of  railways' 
♦J  Transportation  on  roads  and  highways 

.2  Transportation  by  railways 

.21  Railway  terminals  and  stations 

.211  Arangement  of  passenger  stations 

,212  Arrangement  of  freight  and  terminal  stations 

.213  Stations  for  special  purposes    (coal,  live  stock,  etc.) 

.214  Union  stations       Division  of  expenses 

.215  Heating  and  lighting  of  stations 

.22  Trains 

.221  Train  resistance 

.1  Resistance  of   freight  trains 

.2  Resistance  of  passenger  trains 

.3  Resitance  o  fengines 

.4  Resistance  on  electric  roads 

.5  Resistance  of   foreign  rolling  stock 

.6  Air  resistance 

.7  Dynamometer  cars     (See  625.245) 

.222  Running  of  trains       Schedules 

.223  Use  of  and  distribution  of  rolling  stock 

(1   Passenger  cars;     2  FreiK'it  cars:     Rclurn  of  empty  cars;     Iiiter- 
clianjre  of  cars) 

.224  Passenger  train  service       Postal  service 

.225  Freight  service      Making  up  trains       Tonnage  rating 

.226  Baggage  service 


EXTENSION  DECIMAL  SYSTEM   OF   CLASSIFICATION 


65 


656.227 
.228 
.229 

.23 

.231 

.232 
.233 

.234 

.235 
.236 


.237 

.24 
.25 

.25 

.251 

.252 

.253 

.254 


.255 
.256 


.257 

.258 
.259 

.26 


Transportation  of  dangerous  and  perishable  freight 

Military  transportation 

Traffic  and  rates 
Transportation  tolls  and  rates  in  general 

(Revision  of  rates   Basing- rates  Differential  rates  Zone  tariffs,  etc;) 

Cost  of  transportation 

Competition   of   railways        Division  of  traffic       Pools, 

agreements,  etc. 
Passenger  rates      Rates  for  baggage,  dogs,  etc.      Passes 

and  reduced  fares 
Freight  rates       Classification  of  freight 
Rates  for  transportation  other  than  by  railway 

Rates  of  porterag^e  and  drayage     Steamer  rates     Street  railway 
rates 

Accounting  and  auditing       Supervision  of  receipts  and 
expenses 


Damage 


Claims       Responsibility 


Sounds     Daltonism 


Delays 
Safety  appliances 
General  rules 

Signals  in  general     Forms     Colors 
Hand  signals       Train  signals 
Fixed  track  and  station  signals 

Apparatus  for  long  distance  communication  Bells  and 
special  warning  signals  Telegraph  Telephone 
Communication  between  stations  and  running 
trains  Various  operating  systems  Train  dis- 
patching Protection  of  trains  in  distress 
Staff  and  ticket  system  of  controlling  trains 
Block  systems 

Simple  manual  block  signals 
Electrically  controlled  manual  block  signals 
Automatic  electric  block  signals 
Automatic  pneumatic  block  signals 
Centralization  of  operation  of  switch  and  signal  systems 
Interlocking  switch  and  signal  apparatus 
Electro-pneumatic    interlocking    devices 
Indirect    blocking    systems        Electric    slot        Ring    and 

key      Locking  of  draw-bridges 
Other  safety  devices 

(Apparatus  placed  in  trains     CommunicatioQ  between  cars  and 
with  locomotive    Speed  indicators  on  trains  or  along-  the  track) 

Accessories  to  railway  service       Dray  and  cab 
service   Buffets,    restaurants  and  hotels 


66  ILLINOIS    ENGINEERING   EXPERIMENT    STATION 

656.27  Operation  of  line  with  light  traffic  and  of  local 

and  tributary  railways 

.38  Accidents 

.280  Statistics       General  questions 

.281  Derailments 

,282  Broken  couplings      Runaway  cars 

.283  Collisions 

.284  Other  accidents 

.285  Accidents  to  railway  employees 

.296  Accidents  to  the  public  upon  railway  property 

.29  Miscellaneous  questions  relative  to  railway  tratis- 

portation 

.3  Transportation  by  horseless  vehicles 

.30 
.31 

.32  Automobiles 

.321  Types 

.1  Pleasure    vehicles 

.2  Commercial   vehicles 

.3  Agricultural  vehicles 

.322  Motive  powers 

.1  Internal  combustion   motors 

.2  Steam    motors 

.3  Electric   motors 

.323  Principal  parts   (excluding  motors) 

(1  frames,  spriii)?s,  etc.;    2  clutches,  brakes;    3  pear:    4  axles,  dif- 
ferentials;   6  wheels,  rims,  tires;  J:7  steering 'grear;     8  journals) 

.324  Design  and  construction 

.325  Testing 

.329  Maintenance,  operation,  laws,   etc. 

657  Book-keeping      Accounting 

660         Chemical  technology 

66  \  Chemicals 

(1  chemical  elements;     2  acids;     3  alkalies;    4  salts) 

662  Pyrotechnics      Explosives 

665  Oils      Gases 


EXTENSION   DECIMAL   SYSTEM   OF    CLASSIFICATION 


67 


665.2 

Animal  oils  and  fats 

3 

Vegetable  oils  and  fats 

A 

Mineral  oils       Paraffin       Asphaltum 

J 

Illuminating  gases 

-8 

Otiier  gases 

666 

Ceramics      Glasst  etc* 

(1  Glass;   2  Enamel:    3  Ceramics;   4Clav;   5  Por 

and  earthenware) 

666.7 

Bricks        Tiles 

.8 

Artificial  stone 

.9 

Cements       Limes       Mortars 

o67 

Bleaching,  dyeing,  etc* 

668 

Other  organic  chemical  industries 

o69 

Metallurgy  and  assaying 

669.J 

Iron  and  steel 

.11 

Economic  factors 

.111 

Sources 

.112 

Production 

.113 

Costs 

.114 

Prices 

.115 

Uses 

.12 

Nature  and  properties 

.121 

Composition        Analyses 

.122 

Constitution 

.1 

Thermal  examinations      Diagrams 

.2 

Metallography 

.123 

Physical  properties       Tests 

.124 

Chemical  properties       Corrosion 

.13 

Alloys 

.131 

Nickel 

.132 

Manganese 

.133 

Chrome 

.134 

Tungsten 

.135 

Molybdenum 

.136 

Vanadium 

68 


ILLINOIS    ENGINEERING    EXPERIMENT    STATION 


669.137 

Silicon 

.138 

Titanium 

.139 

Other  alloys 

.14 

Extraction 

.141 

Direct  processes 

.142 

Blast  furnace  process 

.143 

Electric   furnace  process 

.15 

Purification 

.151 

Puddling  processes 

.152 

Open  hearth  processes 

.1 

Acid 

.2 

Basic 

.153 

Bessemer  processes 

.1 

Acid 

.2 

Basic 

.154 

Electric    furnace    processes 

.16 

Carburization 

.161 

Cementation  process 

.162 

Crucible  process 

.17 

Founding 

.171 

Melting 

.172 

Molding 

.18 

Treatment 

.181 

Heat    treatment 

.1 

Hardening 

.2 

Tempering 

.3 

Annealing 

.182 

Case    hardening 

.183 

Malleable  cast  iron  process 

.184 

Mechanical  treatment 

.1 

Forging 

.2 

Rolling 

.3 

Wire  drawing 

.4 

Pressing 

.5 

Machining 

.185 

Finishing 

.1 

Sand  blasting 

.2 

Pickling 

.3 

Painting 

.4 

Galvanizing 

.5 

Plating 

.6 

Oxidized  coating 

.7 

Enameling 

EXTENSION   DECIMAL   SYSTEM   OF    CLASSIFICATION 


69 


669.19 


Plants 


669.2 

Gold  and  silver 

.21 

Gold  alone 

.211 

Economic  factors 

.1 

Sources 

.2 

Production 

.3 

Costs 

.4 

Purchasing  power 

.5 

Uses 

.212 

Properties 

.213 

Alloys 

.218 

Chlorination 

.1 

Theory 

.2 

Vat  chlorination  process 

.3 

Barrel  chlorination  process 

.219 

Plants 

.22 

Silver  alone 

.221 

Economic   factors 

.1 

Sources 

.2 

Production 

.3 

Costs 

.4 

Prices 

.5 

Uses 

.222 

Properties 

.223 

Alloys 

.228 

Leaching 

.1 

Hot  water  leaching       Ziervogel  process 

.2 

Brine   leaching        Augustin  process 

.3 

Hyposerlphite  leaching 

.31 

Theory 

.32 

Patera  process 

.33 

Russell  process 

.229 

Plants 

.23 

Gold  and  silver 

.231 

Amalgamation 

.1 

Theory 

.2 

Plate  amalgamation  process 

.3 

Pan  amalgamation  process 

.235 

Smelting 

.237 

Refining   and   parting             see  669.373,  669.473  and  669. 

573 

.238 

Cyanidation 

.239 

Plants 

669.3 

Copper 

.31 

Economic  factors 

70  ILLINOIS    ENGINEERING   EXPERIMENT    STATION 


669.311 

Sources 

.312 

Production 

.313 

Costs 

.314 

Prices 

.315 

Uses 

.32 

Properties 

.33 

Alloys 

.34 

Roasting 

.35 

Matte  smelting 

.351 

Reverberatory   furnace  process 

.352 

Blast  furnace  processes 

.1 

Smelting  roasted  ore 

.2 

Pyritic  smelting 

^       .36 

'  Copper  smelting 

.361 

Reverberatory  furnace  process  for  blister  copper 

.362 

Blast  furnace  process  for  black  copper 

.363 

Converting 

.37 

Refining 

.371 

Reverberatory  furnace  process 

.372 

.373 

Electrolytic  process 

.38 

Leaching 

.381 

Rio  Jinto  process 

.382 

Hunt  and  Douglas  processes 

.383 

Neill  process 

.384 

Henderson  process 

.39 

Plants 

669.4 

Lead 

.41 

Economic  factors 

.411 

Sources 

.412 

Production 

.413 

Costs 

.414 

Prices 

.41S 

Uses 

.42 

Properties 

.43 

Alloys 

.44 

Roasting 

.45 

Smelting 

.451 

Ore  hearth  process 

.452 

Reverberatory  furnace  process 

.453 

Blast    furnace    process 

EXTENSION   DECIMAIy  SYSTEM   OF    CLASSIFICATION 


71 


669.46 

.47 

Refining 

.471 

Pattinson  process 

.472 

Parkes  process 

.473 

Electrolytic  process 

.48 

Leaching 

.49 

Plants 

669.5 

Zinc 

.51 

Economic  factors 

.511 

Sources 

.512 

Production 

.513 

Costs 

•514 

Prices 

.515 

Uses 

.52 

Properties 

.53 

Alloys 

.54 

Roasting 

.55 

Smelting 

.56 

.57 

Refining 

.571 

Reverberating  furnaces  process 

.572 

.573 

Electrolytic  process 

.58 

Leaching 

.59 

Plants 

.6 

Tin 

.7 

Mercury  and  other  metals 

.8 

General  factors  of  roasting,  smelting,  refining 

.81 

Fuels 

.811 

Theory  of  combustion 

.812 

Solid   fuels 

.1 

Wood 

.2 

Charcoal 

.3 

Peat 

.4 

Lignite 

.5 

Bituminous  coal 

.6 

Coke 

.7 

Anthracite 

.813 

Liquid    fuels 

.814 

Gaseous  fuels 

72  ILUNOIS    ENGINEERING    EXPERIMENT    STATION 


669.814.1 

Natural  gas 

.2 

Producer  gas 

.3 

Water  gas 

.4 

Coal  gas 

.5 

Blast    furnace    gas 

.82 

Refractories 

.831 

Theory 

.822 

Siliceous  refractories 

.1 

Sand 

.2 

Gannister 

.3 

Silica  brick 

.4 

Carborundum  and   siloxicon 

.823 

Argillaceous  refractories 

.1 

Fire  clay 

.2 

Common  clay 

.824 

Aluminaceous  refractories 

.1 

Bauxite 

.2 

Fused  alumina 

.825 

Carbonaceous   refractories 

.1 

Graphite 

.2 

Carbon  brick 

.826 

Chromitic  refractories 

.827 

Alkaline  earth  refractories 

.1 

Magnesia 

.2 

Dolomite 

.3 

Lime 

.828 

Rare  earth  refractories 

.7 

Zirconia 

.2 

Tungsten 

.829 

Application  and  maintenance 

.1 

Cements 

.2 

Tamping   implements 

.9 

Repair  materials  and  methods 

.83 

Furnaces 

.831 

Roasting  and  calcining  furnaces 

.1 

Theory   of   roasting  and   calcining 

.2 

Heaps 

.3 

Stalls 

.4 

Kilns 

.5 

Revcrberatory  furnaces 

.51 

Hand 

.52 

Mechanical 

.521 

With  plane  hearths 

.522 

With  conical  hearths 

.523 

With  cylindrical  hearths 

.6 

Muffles 

EXTENSION   DECIMAL   SYSTEM   OF    CLASSIFICATION 


73 


669.831. 


.832 


.71 
.72 

.1 

.2 

.3 

.31 

.32 

.4 

.5 

.6 


.833 
.834 
.835 
.836 
.837 


.85 
.86 
.87 
.88 
.89 


669.9 
.91 

.911 


.912 


.913 


.92 

.921 
.922 
.923 
.924 
.925 
.926 


Blast  roasting  furnaces 

With  intermittent  discharge       Pots 
With  continuous  discharge 
Smelting  furnaces 
Theory  of  smelting 
Hearths 

Reverberatory    furnaces 
Direct  fired 
Regenerative 
Blast  furnaces 
Converters 
Electric   furnaces 
Liquation  furnaces 
Distillation   furnaces        Retorts 
Sublimation    furnaces 
Refining  furnaces 
Melting  furnaces 

Pyrometry 

Flue  gases  and  dusts 

Slags 

Mattes  and  speisses 

Metals  and  alloys 

Metallography 

Samplingf,  assaying,  preliminary  operations 
Sampling 
Sampling  ores  and  fluxes 

Theory 

Taking   samples 

Preparing  samples 

Sampling   works 
Sampling  metals 

Theory 

Methods 
Sampling  gases 

Theory 

Methods 

Assaying 

Fire  assaying 
Wet  assaying 
Electrolytic  assaying 
Coal  analysis 
Oil   analysis 
Gas  analysis 


74  ILIylNOIS    ENGINEERING    EXPERIMENT    STATION 

669  93  Drying 

.94  Crushing 

.  9  5  Briquetting       see  622.-83  and  622.789.5 

670         Manufactures 

(In  this  division  ma  v  be  placed  items  that  do  not  properly  belong  under 
621;  such  as  items  relating-  to  textile  mills  or  machinery,  the  manu- 
facture of  shoes,  etc.) 

680         Mechanic  Trades 
690        Building 

69  (001)  Statistics 

(002)  Quantities  and  costs      Prices,  etc. 

(003)  Contracts  and  specifications 

(01)  Theories  of  construction 

(02)  Compends,   treatises,   text   books,   etc. 
(07)  Education,  teaching,  etc. 

(See  form  divisions  pp,  7  and  8) 

691  Materials      Processes      Preservatives 

For  Streng-th  of  materials,  see  620.1 

For  Uses  of  prepared  materials,  see  6P3  to  699 


A 

"Woods 

.18 

Preservation  of  woods 

69  J. 2 

Natural  stone     Protection 

.211 

Limestone 

.221 

Granite 

.231 

Sandstone,  ordinary 

.24 

Slate 

.29 

Preservation 

.3 

Artificial  stone       Concrete 

.31 

Beton  coigniet 

.32 

Ransome 

.33 

Hollow  l)lock 

.34 

Selenitic 

.35 

Lime  concrete 

.36 

Cement  concrete 

.37 

.39 

Aggregate 

.4 

Bricks       Tiles       Ceramic 

.46 

Tiles 

.47 

Tiles,  hollow  structural 

I 


EXTENSION   DECIMAL,  SYSTEM   OF    CLASSIFICATION 


75 


691.471 

Floor 

.472 

Roof  and  ceiling 

.48 

Terra  cotta 

.49 

Sewer  tiles 

«5 

Lime       Cement       Plaster 

.51 

Lime,  ordinary 

.53 

Lime,  hydraulic 

.53 

Lime,  selenitic 

.54 

Cement,  natural 

.55 

Cement,  portland  or  artificial 

.56 

Plaster  of  paris 

.57 

Keene's  cement 

,6 

Glass 

«7 

Iron       Steel       Anti-rust  processes 

.71 

Cast  iron 

.72 

Malleable  cast  iron 

.73 

Wrought  iron 

.74 

Steel,  blister  or  tool 

.75 

Steel,  crucible 

.76 

Bessemer  steel 

.77 

Open  hearth  steel 

.78 

.79 

Protection  of  iron  and  steel 

.791 

Painting 

.792 

Tinning 

.793 

Galvanizing  (Zincking) 

.794 

Electroplating 

.8 

Other  metals 

S 

Other  materials 

.91 

Mineral  wool 

.92 

Hair 

.93 

Paper 

.95 

Asbestos 

.96 

Asphalt       Tar 

?2 

Plans       Specifications^  etc* 

A 

General  drawings 

76  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 

692.2  Detail  drawings 

.3  Specifications 

.4  Contracts       Agreements       Bids      Advertisements 

,5  Estimates       Quantities      Cost 

♦6  Superintendence 

,7  Supervision  of  Accounts 

.8  Professional  services      Fees      Commissions 

.9  Building    laws        Liabilities    of    architects,    owners, 
and  contractors 

.91  State  or  general  laws 

.93  City  ordinances 

.93  Town  or  village  ordinances 

.94  Trade  rules 

.95  Liabilities  of  architects 

.96  Liabilities   of  owners 

.97  Liabilities  of  contractors 

.98  Lien  laws 

693  Masonry       Plastering  ■   Fire-proofing 

♦J  Stone  construction 

.2  Brick  construction 

3  Terra  cotta  construction 

,4  Hollow  tiles  and  porous  terra  cotta 

.5  Concrete  and  beton  construction 

.51  Massive 

.52  Layers 

.53  Hollow  block 

.54  Sidewalks 

.55  Ornamental 

.6  Plastering 

.7  Reinforced  concrete 

.71  Systems 


'11 


.712  Ransome's 


Ordinary  I 

T) »_  T 


EXTENSION   DECIMAL  SYSTEM   OF    CLASSIFICATION 


Y/ 


693.713 

Unit 

.714 

Hennebique 

.715 

Roebling 

.72 

Fonns  and  centers 

.73 

Testing  and  inspection 

.74 

Data  from  experiments 

.75 

Formulas 

.76 

Special  applications 

.8 

Fire-proofingf 

.81 

Systems 

.82 

Walls  and  partitions 

.83 

Flors 

.84 

Roofs 

.85 

Columns 

.86 

Girders 

.87 

Trusses 

.88 

Vaults 

694 

Carpentry      Joinery      Stairbuilding 

695 

Roofing 

695A 

Shingle 

.2 

Slate 

.3 

Tile 

A 

Metal 

.5 

Iron  and  steel 

.6 

Asphalt,  tar,  etc. 

.7 

Felt  and  gfravel 

.8 

Cloth 

.9 

Thatch,  etc. 

696 

Plumbing       Gas  and  steam  fitting 

A 

Plumbing 

.2 

Gas-fitting: 

.3 

Steam-fitting 

.4 

Rivets  and  riveted  joints 

78  ILLINOIS    ENGINEERING    EXPERIMENT    STATION 


696.5 

Screws  and  screw  joints 

.6 

Rust  and  caulked  joints 

J 

Anchors       Bond  irons 

.8 

Other  branches 

.9 

Plumbing  laws 

697 

Heating  and  ventilating 

A 

Fireplaces 

a 

Stoves 

.3 

Furnaces,  hot  air 

.4 

Hot  water 

.41 

High  pressure 

.42 

Low  pressure 

.43 

Low  pressure  with  steam  mains 

.5 

Steam 

.51 

High  pressure 

.52 

Low  pressure 

.53 

Exhaust  steam 

.54 

Vacuum 

.6 

Gas 

.61 

Illuminating 

.62 

Fuel 

.63 

Natural 

.64 

Acetylene 

.7 

Electric  and  other  methods 

^ 

Smoke  flues  and  chimneys 

.9 

Ventilation       Ducts       Fans 

.91 

Natural  system 

.92 

Plenum 

.93 

Exhaust 

.94 

Fresh  air  ducts 

.95 

Foul  air  ducts 

.96 

Treatment  of  air 

.97 

Regulation  of  air  supply 

.98 

Fans 

EXTENSION  DECIMAL  SYSTEM   OF    CLASSIFICATION 

698  Painting      Glazing      Paperhanging 

699  Car  and  shipbuilding 

720  Architecture 

72 J  Architectural  construction 
A  Foundations 

.2  Walls 

.3  Piers       Cplumns 

A  Arched  constructions 

.5  Roofs 

.6  Floors  and  flooring 

.7  Ceilings 

.8  Doors       Gates       Grilles       "Windows 

.9  Iron  and  composite  structures 

722  Ancient  and  oriental  architecture 

723  Mediaeval  architecture 

724  IVlodern  architecture 

725  Public  buildings 

A  Administrative      Governmental 

.2  Business  and  commercial 

♦3  Transportation  and  storage 

.31  Railway  passenger  stations 

.32  Railway  freight  stations 

.33  Railway  shops,  roundhouses,  car  houses 

.34  Dock  buildings 

.35  Wr.re  houses       Cold  storage 

.36  Grain  elevators 

.38  Garages 

.4  Manufactories 

.41  Textile  factories  or  mills 

.42  Breweries       Distilleries 


80  ILLINOIS   ENGINEERING   EXPERIMENT    STATION 


725.43 

Foundries       Machine    shops       Iron   and    steel 

work 

.44 

Wood-working  mills 

.45 

Carriage  and  car  factories 

S 

Hospitals  and  asylums 

.6 

Prisons  and  reformatories 

.7 

Refreshment       Baths      Parks 

.8 

Recreation 

.9 

Other  public  buildings 

726 

Ecclesiastical  and  religious 

727 

Educational  and  scientific 

3 

Colleges  and  universities 

.4 

Professional  and  technical  schools 

.5 

Laboratories 

728 

Residences 

729 

Architectural  design  and  decoration 

740 

Drawing     Decorations     Design 

741 

Freehand 

742 

Perspective 

744 

Mathematical  and  scientific 

760 

Engraving 

770 

Photography 

RELATIVE  INDEX 


A 

Tests   of 

621.533 

Wet 

621.517 

Absorption    dynamometers 

531.4 

Air  engines 

621.4 

Absorption  of  heat 

536.3 

motors 

621.541 

Abutments   for  bridges          624.12  624.55 

pressure  gages 

621.532 

Accidents,  in  mines 

622.S 

refrigerating  machines 

621.565 

Railway 

656.28 

resistance    (railway   trains) 

656.221.6 

Statistics    of    railway 

656.28 

supply,  Regulation  of    (venti- 

to railway  employees 

656.285 

lation) 

697.97 

to  public  upon  railway  prop- 

Alcohol engines 

621.434.24 

erty 

656.296 

Algebra 

512 

Accounting 

657 

Alkalies    (chemistry) 

661.3 

Railway 

656.237 

Alkaline   accumulators 

621.356 

Shops,  manufactories  and  en- 

Alloys  of  iron    and   steel    (S 

;e 

gineering  works 

621.706 

Steel) 

669.13 

Accounts,    Supervision   of 

Alternating  current,  convert- 

(Building) 

692.7 

ors 

621.313.5 

Accumulators,     Electric     (See 

generators 

621.313.43 

Storage   batt.) 

621.354 

machinery 

621.313.3 

Alkaline 

621.356 

transmission    systems             ( 

321.319.123 

Lead     (See    Lead    accumula- 

Aluminaceous   refractories 

669.824 

tors) 

621.355 

Amalgamation  of  gold   and  si 

1- 

Other  types  of 

621.357 

ver 

669.231 

Accumulators,    Water 

621.254 

Ammeters 

621.374.4 

Acids    (chemistry) 

661.2 

Ammonia,   absorption   machin 

es    621.573 

Acoustics 

534 

compression   machines 

621.572 

Acyclic  machines                         62 

1.313.291 

Analyses,  of  iron  and  steel 

669.121 

Adhesion   of  locomotives 

621.131.1 

of  coal 

669.924 

Administration  of  manufactories  621.704 

Administrative   buildings  725.1 

Aeronautics  533.6 

Agillaceous    refractories  669.823 

Air  533 

Flow  of,  in  pipes  621.534 

Air  brakes  625.25 

Air   compression  621.5 

Theory  of  621.534 

Thermodynamics   of  621.534 

Air  compressors,  Dry  621.515 

Efficiency   of  621.534 


of  gas  669.926 

of  oil  669.925 

Analytical   geometry  516 

Anchorage    (suspension  bridges)    624.55 

696.7 

722 

622.651.3 

620.198 

621.46 

665.2 

669.181.3 

.553.25 


Anchors    (plumbing) 
Ap'^ient   architecture 
Animal   haulage    (mines) 
Animal  materials,  Tests  of 
Animal  motors 
Animal   oils 
Annealing    (steel) 
Anthracite    coal 


81 


I 


82 


RELATIVE   INDEX. 


Aqueducts 

628.14 

Braking   devices   for 

656.323 

Arch   bridges 

624.6 

Clutches   for 

656.323.2 

Arched   constructions    (arch 

i- 

Design  and  construction  of 

656.324 

tecture) 

721.4 

Frames  for 

656.323.1 

Arches 

624 

Gears  for 

656.323.3 

Architects,  Liabilities  of 

692.9 

Journals  for 

656.323.8 

Architectural   construction 

721 

Laws  for 

656.329 

Architectural   design   and   deco- 

Motive power  of 

656.322 

ration 

729 

]\Iotors  for 

656.322 

Architecture 

720 

Principal   parts   of 

656.323 

Ancient  and  oriental 

722 

Operation  of 

656.329 

Mediaeval 

723 

Stearing  gears   for 

656.323.7 

Modern 

724 

Tires  for 

656.323.6 

Naval 

623.8 

Types  of 

656.321 

Arc  lamps 

621.325 

Wheels   for 

656.323.6 

Alternating  current  enclosed  621.325.5 

Auto-transformers 

621.314.4 

Alternating   current  open 

621.325.4 

Axles,  Car 

625.212 

Continuous  current  enclosed   621.325.3 

Locomotive 

621.134.1 

Continuous    current    open 

621.325.2 

Radial  and  convergent 

625.215 

Arc  lighting 

621.325 

Arc  rectifiers 

621.313.73 

B 

Arithmetic 

511 

Baggage  rates 

656.234 

Artificial  cement 

601.55 

service 

656.226 

Artificial  stone   (sec  Stone, 

\r- 

Balancers  (electric) 

621.313.27 

tificial)                            601.3     620.130 

Balancing  of  car  wheels 

625.212 

Asbestos  for  building 

691.95 

Ball  bearings 

621.822 

Ash  conveyors 

621.183.78 

Ballast    (railways) 

625.141 

Ash  pits   (locomotives) 

621.133.2 

Bascule   bridges 

624.83 

(stationary   boilers) 

621.183.55 

Basins,  Filter 

628.16 

Asphalt    ("building   material^) 

691.06 

Baths,   Public 

725.7 

roads 

625.85 

Batteries,   Primaiy 

621.353 

roofing 

605.6 

Storage     (See     Storage    bat 

- 

Asphaltuna                                62 

0.196     665.4 

teries) 

621.354 

Assaying 

669     669.92 

Beams    (bridges) 

624.2 

Astronomy 

520 

Bearings 

621.822 

Asylums    (architecture) 

725.5 

Ball   and   roller 

621.822 

Asynchronous  machines 

621.313.6 

Metals  for 

621.822 

Atmosphere 

533.3 

Bell  signals 

656.254 

Atmosphrric  electricity 

5.37.4 

Belt  gearing 

621.852 

Auditing,  Railway 

656.237 

Bending  machinery 

621.982 

Automatic,  electric  block  sig 

Berlier  system  of  sewerage 

628.215 

nals 

(-.56.2,56.3 

Besemer  process   for  steel 

669.153 

shaft   governor   engines 

621.164.3 

Acid 

669.153.1 

tele[)hono  systems 

621.3S5.75 

Basic 

669.153.2 

Automobiles 

656.32 

Beton  coignict  (artificial  stone) 

691.31 

Axles  for 

656.323.4 

construction    ( iniilding) 

693.5 

RELATIVE   INDEX 


83 


Bevel  gears  621.833.2 
Bids    (building  construction)  692.4 
Binary  vapor  engines  621.44 
Bissell  trucks  621.135.4 
Bituminous    coal  553.24 
shale  553.23 
Blast  furnaces  621.76 
Blowing  engines  for  621.61 
Blasting  622.238 
Bleaching    (chemical    technology)        667 
Blocking   systems,    Indirect  656.258 
Block  systems  656.256 
Automatic  electric  656.256.3 
Automatic  pneumatic  656.256.4 
Electrically    controlled    man- 
ual 656.256.2 
Simple   manual  656.256.1 
Blocks  and  tackles  621.863 
Blowers    (forge   shop)  621.732 
Centrifugal  621.63 
Piston  621.61 
Rotary  621.62 
Blowing  engines  621.6 
Blue  printing  processes  621.716 
Boiler,  accessories  621.184.7 
casing  621.184.54 
construction  621.184.5 
domes  621.184.52 
drums  621.184.52 
economy  621.184.13 
feeding    (locomotive)  621.133.7 
(stationary)  621.194.2 
feedwater  621.184.13 
Treatment   of  621.194.3 
ferules  621.184.53 
firing  621.194.1 
floaters  621.184.72 
flues  621.184.57 
foundations  621.184.57 
furnaces  621.183 
gage  glasses  621.184.72 
hand   holes  621.184.55 
heads  621.184.52 
incrustation  621.194.4 
inspection  621.194.7 
manholes  621.184.55 


manometers 

masonry 

plants 

pressure  gages 

rating 

rings 

riveted   joints 

safety  valves 

shell  setting 

shops 

steam  collectors 

tests 

hydraulic 
tubes 

tubesheets 
types 

water  gages 
whistles,    warning 
zincs 
Boilers 

Bracing  of 
Corrosion  of 
Firetube    (tubular) 
Flash  generators 


621.184.73 

621.184.57 

621.19 

621.184.73 

621.194.7 
621.184.53 
621.184.52 
621.184.73 
621.184.56 
621.792 
621.184.79 
621.184.13 

621.194.7 
621.184.53 
621.184.52 

621.184.2 
621.184.72 
621.184.72 
621.184.79 
621.184  621.194 
621.184.52 

621.196.5 
621.184.25 
621.1S4.S7 


Instantaneous  vaporizing  621.184.27 

Locomotive  621.133     621.184.23 

IManagement   of  621.193 

Marine  621.184.22 

Portable  621.184.23 

Scale  prevention   in  621.194.4 

Setting  and  hanging  of  621.184.56 

Stationary  621.184.24 

Staying  of  621.184.52 

Traction  621.184.23 

Water  tube  621.184.26 

Wear   and   duration   of  621.194.196 

Bolt  and  nut  machinery  621.99 

Bohs  621.882 

Borers,    Churn    (hand)  622.241.1 

(machine)  622.242.1 

Rotary    (hand)  622.241.2 

(machine)  622.242.2 

Bonding  of  rails  621.333.4 

Bond   irons    (plumbing)  696.7 

Book-keeping  657 

Boosters,   Continuous   current  621.313.28 


84 


REI.ATIVE  INDEX 


Boring,  mills 
Mine 
Hand 
Machine 
Bowstring  bridges 
Brakes    (in  mills) 
Brakes,  Air 
Friction 


021.945 
622.24 

622.241 

622.242 
624.32 

621.826 

625.25 

531.4 


Hand,   automatic,  continuous  625.25 

Locomotive  621.135.5 

on  tenders  621.136.1 

Braking  devices  for  automobiles  656.323 

Breakers.   Circuit  621.317.36 

Breakwaters  627.2 

Breast  water-wheels  621.22 

Breweries.   Architecture   of  725.42 

Brick    (building  material)  691.4 

(chem.   tech.)  666.7 

clays  553.61 

construction  693.2 

Tests  of  620.14 

Bridge  beams  624.2 

floors  624.2 

engineering  624 

shapes  624.2 

Bridges  624 

Arch  624.6 

Cast   iron,   masonry   piers  624.63 

Cast  iron  complete           •  624.64 

Elevated    (arch)  624.67 

Masonry  624.62 

Steel  and  iron,  masonry  piers  624.65 

Steel  and  iron,  metal  piers  624.66 

Wooden  624.61 

Cantilever  624.33 

Classification  of,  according  to 

materials  624.01 

according  to   purpose  624.02 

according  to  type  624.03 

Clearance  of  625.22 

Computation  of  parts  of  624.04 

Composite   construction   of  624.7 

Conditions  of  location  624.05 

Foundations  for  624.11 

metal.   Reams   and   floors   for  624.22 

Metal  lattice  624.3 


Ordinary   lattice  624.31 

Bow  string  624.32 

Cantilever  624.33 

Crane  624.34 
Methods  of   construction 

624.07     624.05 
Movable  and   shifting  624.8 
Bascule  624.83 
Draw  624.81 
Jack  knife  624.87 
Operating  mechanism  for         624.88 
Rolling  624.85 
Swing  624.82 
Shifting  in  the  air  624.86 
Trunion  624.84 
Railway  625.13 
Suspension  624.5 
Abutments  for  624.55 
Anchorages  for  624.55 
Floors  for  624.53 
Piers   for  624.54 
Suspension    chains   and    ca- 
bles   for  624.52 
Towers    for  624.54 
Types  of  624.51 
Tubular  624.4 
Vaults  and  arches   for  624.06 
wooden.  Beams  and  floors  for    624.21 
Briquetting  of  coal  622.788 
Brine  system   of   refrigeration   621.565.1 
Broaches    (for  quarrying)  622.222 
Buckets  for  mine  hoisting  622.68 
Buckets  of  steam  turbines         621.165.12 
Buffers  (railway  cars)  625.216 
Buffets    (railway  service)  656.26 
Building  690 
I'uiUling  construction,  Cost  of  692.5 
Superintendence  of  692.6 
Building  laws  092.9 
Building  material  691 
Artificial   stone  691.3 
Asbestos  691.95 
Asphalt  691.96 
Brick,  tiles  691.4 
Cement  691.5 


RELATIVE   INDEX 


85 


Building    Material. — Continued. 

Concrete 

691.3 

Glass 

691.6 

Granite 

691.221 

Hair 

691.92 

Iron  and  steel 

691.7 

Lime 

691.5 

Limestone 

691.211 

Mineral  wool 

691.91 

Paper 

691.93 

Plaster  of  Paris 

691.56 

Preservatives    for 

691 

Sandstone 

691.231 

Slate 

691.24 

Stone    (natural) 

691.2 

Tar 

691.96 

Terra  cotta 

691.48 

Woods 

691.1 

Building     plans      Cspecifications, 

etc.) 

692 

Building  processes 

691 

Building  stones 

553.5 

for  building 

691.2 

Buildings,   Administrative 

725.1 

Business   and   commercial 

725.2 

Cast  iron  in 

691.71 

Dock 

725.34 

Ecclesiastical 

726 

Educational 

727 

Exposition 

624.94 

Governmental 

725.1 

Masonry 

624.93 

Metal 

624.94 

Public 

725 

Recreation 

725.8 

Religious 

726 

Scientific 

727 

Shop 

621.702 

Storage 

725.3 

Transportation 

725.3 

Buoys 

627.9 

Transportation 

625.92 
621.319.34 
621.319.34 
622.68 
669.831 
517 
536.6 
621.83 
621.838 
626 
386 
553.23 
621.581 


Cab  service    (transportation)  656.26 

Cable  roads  625.5 


Cables,     aerial, 
by 

Cables    (elec.   trans.) 
Telephone  and  telegraph 

Cages    (mining) 

Calcining  furnaces 

Calculus 

Calorimetry 

Cams 

Design    of 

Canal    engineering 

Canals  from  economic  aspect 

Cannel  coal 

Can  system  of  ice  making 

Cantilever  bridges    (see  Bridges, 

Cantilever)  624.33 

Trusses  624.22 

Capital  331 

Relation    of,    to    labor  331.1 

Capstans  621.864 

Car  axles  625.212 

Carbonic  acid  refrigerating  ma- 
chines 621.574 

Carbon  filament  incandescent 

lamps  621.326.3 

Carbon   series    (econ.   geology)  553.2 

Carbon  vapor  lamps  621.327.5 

Car,  building  699 

factories  725.45 

frames  625.211 

houses  725.33 

repair  shops  625.26 

unloaders  625.247 

wheels  625.212 

Carburization   of   steel  669.16 

Cementation  process  669.161 

Crucible    process  669.162 

Carpentry  694 

Carriage    factories  725.45 

Carriages    (mine    hoisting)  622.68 

Carriages,  railway,  Principal 

parts  of  625.21 

Cars.   Closed   and   covered  625.243 

Compartment  625.231 

Corridor  or  Vestibule,  Parlor, 

Sleeping  625.232 


86 


relative:  index 


Cars. — Continued. 

Cross    section    of  625.22 

Dining  625.232 

Dynamometer  656.221.7 

Dynamometer  and  special  625.245 

Electric  621.334.3 

Flat  625.241 

Freight  625.24 

Heating  of  625.234 

Hooper   and    dumping  625.242 

Interchange   of  656.223.2 

Lighting  of  625.233 

Mine  622.63 

Passenger  625.23 

Principal   parts   of  625.21 

Refrigerator  625.244 

Sanitation  of  625.234 

Suspension   of  625.213 

Ventilation  of  625.234 

Cast   iron    (in   buildings)  691.71 

Case   hardening  of  669.182 

Manufacture   of  669.17 

Catch  basins   for  sewers  628.255 

Cattle-guards  6r25.162 

Caulked    joints    (plumbing)  696.6 

Ceilings    (architecture)  721.7 

Ceiling  tile  691.472 

Cells,    Primary  621.353 

Secondary  621.354 

Cement,   Building  691.5 

concrete  691.36 

Keene's  691.57 

Natural  691.54 

Portland   or   artificial  691.55 

Tests   of  620.13     620.15 

Cements    (chcm.    tech.)  666.9 

Cements,    Mineral  553.68 

Central   power   stations    (steam 

end  of)  621.19 

Central  stations  621.312 

Combined  621.312.5 

for   lighting   only  621.312.2 

for  power  transmission  621  312.4 

for  traction   only  621.312.3 

Centrifugal   blowers  621.63 

P"mp!=  621.67 


Ceramic  products  (building  ma- 


terials) 

691.4 

Ceramics    (chem.   tech.) 

666 

Chain  gearing 

621.835 

Channelers    (for  quarrying) 

622.223 

Cliains,    Hoisting 

622.674 

Chemical  elements 

661.1 

technology 

660 

Chemical  deodorization  of  sewer 

gas 

628.237 

Chemistry 

540 

of   foundry  irons 

621.745 

Children,  Labor  of 

331.3 

Chimneys    (boiler  plants) 

621.183.8 

(heating  and    ventilation) 

697.8 

(sanitation) 

628.236 

Choke  coils 

621.314.6 

Chrome    steel 

669.133 

Circuit  breakers 

621.317.36 

Circulating    pumps 

621.197.3 

Claims    (transportation) 

656.24 

Classification   of    freight 

656.235 

drawings 

621.717 

Clay 

666.4 

Fire  and  brick 

553.61 

Clearance  of  bridges  and  tunnels  625.22 

Cloth    roofing 

695.8 

Clutches 

621.825 

Friction 

621.825 

Coal    and   ash    conveyors 

621.183.78 

Coal,    Anthracite    and   graphic 

anthracite 

553.25 

Bituminous  and  semi-bitumin- 

ous 

553.24 

Briquetting  of 

622.788 

Cannel 

553.23 

Coking  of 

622.787 

Concentration  of,  by  crushin 

g 

and    screening 

622.786 

Crushing    of 

622.782 

Mining   of    (methods) 

622.33 

Picking  of 

622.781 

Plants  for  preparation  of 

622.789 

Pneumatic  concentration  of 

622.785 

Preparation   of 

622.78 

Screening    of 

622.783 

RELATIVE   INDEX 


87 


Coal. — Continued. 

Washing    of  622.784 

Cocks,  Air  621.184.79 

Coking   of   coal  622.787 

Cold  storage  621.565 

Cold   storage   warehouses  725.35 

Colleges    (buildings)  727.3 

Collisions    (railway)  656.283 

Columns,    Architecture    of  720.3 

Fireproofing   of  693.85 

Combustion  621.182      536.46 

in  locomotive  boilers  621.133.1 

of   effluvia  in   furnaces  628.524 

of    fuel  621.182 

Commerce  380,    650 

commission.    Interstate  385.7 

Commercial    buildings  725.2 

Communication  380     650 

Communication  between  stations 

and    running    trains  656.254 
Communication,  Long-distance 

(transportation)  656.254 
Communication  of  heat  536.2 
Compartment  cars  625.231 
Compends,    Engineering  620.2 
Compensators  621.313.27 
Competition   of   railways  656.233 
of  railways  and  steamship  lines  385.2 
Compound   locomotives  621.134.4 
Distribution    in  621.134.4 
Compressed  air.   Applications   of  621.54 
Applications  of,  in  railway  ser- 
vice 621.544 
conduits  621.532 
drills  621.542 
engines  621.42 
locomotives                      .  621.545 
mains  621.532 
piping  621.532 
Pumping   by  621.546 
Reheating   of  621.534 
transmission  and  distribution  of  621.53 
Compressibility  of  gases  633.2 
Compression,   Air  621.5 
Theory   of  621.534 
Compressors,    Air  621.51 


Concentrators,  Coal         622.785     622.786 

Ore  622.75 

Concrete    (building    construction)    693.5 

(building  material)  691.3 

Cement  691.36 

construction.   Hollow   block  693.53 

Lime  691.35 
Reinforced   (See  Reinforced 

concrete)  693.7 

Tests    of  620.13 

Condensation   in   steam   pipes  621.185.1 

of   effluvia  in  water  628.523 

Condensers    (electric)  621.315.3 

Jet  621.197.63 

Steam  621.197.6 

Surface  621.197.62 

Telephone  621.386.5 

Conductors   (electric)  621.319.2  621.319.3 

Insulated  621.319.33 

Uninsulated  621.319.32 

Conduits,  Compressed   air  621.532 

for  water  628.14 

Underground    transmission  621.319.23 

Conservation    of    energy  531.6 

Continuous   current 

boosters  621.313.28 

compensators    or    balancers  621.313.27 

convenors  621.313.25 

dynamotors  621.313.26 

generators  621.313.23 

machinery  621.313.2 

motors  621.313.24 
transmission  systems             621.319.122 

Contractors,    Liabilities   of  692.9 

Contracts    (building)  692.4 

Engineering  62(003) 

Prison  331.5 

Control  devices   (electric)  621.317.4 

Convergent    axles     (cars)  625.215 

Convertor  substations  621.312.64 

Convertors,    Continuous   cur- 
rent 621.313.25 
Alternating   current  621.313.5 
Frequency  621.313.67 
Motor  621.313.57 


RELATIVE   INDEX 


Converters. — Continued. 

Phase                        621.313.68  621.313.54 
Synchronous  621.313.53 
Conveying   machinery  621.86 
Conveyors.  Ash  621.183.78 
Fuel  621.183.78 
CooHng  towers  621.197.64 
Copper.   Alloys  of  669.33 
Smelting  of  669.36 
Economic    factors   concerning     669.31 
Leaching   of  669.38 
Matte  smelting  of  669.35 
Metallurgy  of  669.3 
Plants  for  the  production  of       669.39 
Properties  of  669.32 
Refining    of  669.37 
Roasting  of  669.34 
Corridor   cars  625.232 
Corrosion   of  boilers  621.196.5 
Cost-keeping    in    manufacturing    621.706 
Cost  of  building  construction  692.5 
of   transportation  656.232 
Costs   in   engineering  62(002) 
Cotters  621.883 
Country    roads  625.7 
Counter    balancing    of    locomo- 
tives 621.135.2 
Couplers  and   buffers  625.216 
Coupling  arrangements  for  ten- 
ders 621.136.2 
Couplings    (mecli.   tech.)  621.825 
Covering  for  steam  piping  621.185.6 
Crane   bridges  624.34 
Cranes  621.87 
Hydraulic  621.263 
Locomotive  621.875 
Revolving  621.873 
Traveling  621.874 
Cranked   axles    (locomotives)  621.134.1 
Crookes  tubes  621.327.7 
Crossarms  for  overhead  lines  621.319.224 
Crossings    (railway)  625.152 
Cross-tics    for   track  625.142 
Crushing    (mining)  622.73 
Coal  622.782 
Cupola   practice  621.745 
Curves    Crnilway)  625.113 


Cutting   of   gears  621.834 

Cutting    machinery    (metal)  621.932 

Cylinders,  Locomotive  621.134.1 

D 

Daltonism  656.251 
Damage  in  transportation  656.24 
Dams                                             621.29     627.8 
Dangerous  freight,  Transporta- 
tion   of  656.227 
Dangers    (mining)  622.81 
Decoration  740 
Architectural  729 
Decorative  illumination  by  elec- 
tricity 621.321.4 
Delays    in    transportation  656.24 
Deodorization  of  solids  and 

liquids  628.32 

Derailments  656.281 

Derricks  621.872 

Descriptive  geometry  515 

Design  740 

Architectural  729 

of  automobiles  656.324 

of  cams  621.838 

of  engine  parts  621.11 

of   gears  621.833 

of  machine  parts  621.8 

of   refrigerating   systems  621.566 

of  riveted  joints  621.884 

of   sewers  628.24 

of  steam  turbines  621.165.3 

of  tenders  621.136.1 

Designs,  Engineering  62(004) 

Detail   drawings  692.2 

Dial   switches    (electric)  621.317.33 

Dictionaries,  Engineering  620.3 

Die   press   machinery  621.984 

Dies,   jigs,    etc.  621.756 

Differential   rates  656.231 

Dikes  627.4 

Dining   cars  625.232 

Direct    current    machinery  621.313.2 

Direct   current   trans,    sys.  621.319.122 

Direct  expansion  refrigeration  621.565.2 


RELATIVE   INDEX 


89 


Disinfection  of  solids  and  liquids  628.32 
Disposal  of   sewage  628.3 

Disposal  of   solids  and  liquid 

wastes  628.54 

Distilleries,   Architecture  of  725.42 

Distribution   of  compressed   air 

(See  Compressed  air)  621.53 

Distribution   and  use  of  freight 

cars  656.223.2 

Dock  buildings  725.34 

Docks  627.3 

Domes,   Locomotive  621.133.6 

Boiler  621.184.52 

Doors    (architecture)  721.8 

Double    current   generators       621.313.56 
Draft   appliances    (boiler   fur- 
naces) 621.183.8 
Draft  gears    (rolling  stock)  625.216 
Drafting  rooms                          -  621.71 
Arrangement  of                              621.712 
Equipment  of                                  621.713 
Materials    and    supplies    for        621.714 
Drainage,   House  628.6 
of  land  627.5 
of  mines   (see  Mines,  Drainage 

of)  622.5 

of  railway  road  bed  625.123 

of   sewage   farms  628.367 

Drains   for  steam   piping  621.185.5 

Draw-bridges  624.81 

Locking   of  656.258 

Drawing  740 

Freehand  741 

Mathematical  744 

Methods  and  processes  of  621.753 

Perspective  742 

Drawings    (building)  692.1 

Classification   and    storage   of   621.717 

Engineering  62(004) 

Dray  and   cab  service  656.26 

Dredge   engines  621.167 

Dredges  621.866 

Mining  622.216 

Dredging  627.7 

machinery  627.7 


Drifting,   Tunnelling    (mining)        622.26 
Drill    holes,    Breaking    from, 

without  explosives  622.236 

Drilling    (mining)  622.235 

Drilling  machinery  621.952 

Drills  621.95 

Pneumatic  621.542 

Driving  mechanism   of   locomo- 
tives 621.134.1 
Drop    forging  621.734 
Drop  forging  processes  621.733 
Drums,   Boiler                                621.184.52 

Hoisting  622.673 

Dry    sand   molding  621.743 

Ducts,  Foul  air  697.95 

Fresh   air  697.94 

Dumping  cars  625.242 

Dust,    Prevention    of  628.511 

Dyeing    (chemical    technology)  667 

Dynamical   electricity  537.5 

Dynamics  531.3 

Dynamoelectric   machinery  621.313 

Manufacturing  processes  for     621.318 

Tests  of  621.313(007) 

Dynamometer  cars  625.245    656.221.7 

Dvnamometers         531.21   531.4  621.197.7 


Dynamos 

General  details  of 

Operation  of 

Tests  of 
Dynamotors 


537.38     621.313 

621.313(0051) 

621.313(0064) 

621.313(007) 

621.313.26 


Earth    closet    systems  628.43 

Earthwork,  Computation  of  625.114 

Earthy  economic  materials  553.6 

Ecclesiastical    buildings  726 

Economic  aspects  of  canals  and 

highways  386 

Economic    geology  553 

Economizers,    Fuel  621.197.2 

Economy,  of  boilers  621.184.13 

Political  330 

Edifices,    Vaulted,    of   masonry       624.92 


90 


RELATIVE   INDEX. 


Education  370 
Engineering  620.7 
Educational   and  scientific  build- 
ings 727 
Effluvia,  Combustion  of,  in  fur- 
naces 628.524 
Condensation   of,   in    water         628.523 
Effluvium   nuisances  628.52 
Egg-shaped    sewers  628.224 
Elastic  limit  620.112.3 
Elasticity  539.3 
Electric 
block    signals  656.256.3 
cars  621.3.34.3 
energy,    Transmission  of           621.319 
lighting  537.83.  621.3 
locomotives  621.334.2 
methods   of  measuring     tem- 
peratures 536.53 
railways   (interurban)  621.331.33 
power   plants  621.312 
Combined  621.312.5 
for   lighting  621.312.2 
for    power    transmission        621.312.4 
for  railways  621.312.3 
roads,    Resistance   on  656.221.4 
signs  621.321.44 
slot  656.258 
testing  621.37 
Electric  traction  621.33 
Accessories   for  621.332.7 
Bonding  for  621.333.4 
Catenary   suspension    for       621.332.23 
Control  system  for  621.334.4 
Feeders  for  621.332.17 
Leakage  &  electrolysis  in     621.333.167 
Locomotives    for  621.334.2 
Motor    cars    for  621.334.3 
Rails    for  621.333.2 
Rolling  stock   for  621.334 
Running   gear   for  621.334.7 
Street  railways  621.331.342 
systems  621.331.2 
systems  according  to  current  621.331.4 
alternating  621.331.43 
''irect  621.331.42 


systems  according  to  delivery 

of  power  621.331.5 

overhead  trolley  621.331.53 

third   rail  621.331.56 

underground  trolley  621.331.54 

systems  according  to  service  621.331.3 

interurban  621.331.33 

trunk  621.331.32 

Third    rail    for  621.332.3 

Track    for  621.333 

Trackless  621.332.25 

Trolley  lines   for  621.332.2 

Underground  conductor   for   621.332.5 

Wiring   for  621.334.5 

Electrical    engineering  621.3 

Heavy   current  621.31-.37 

Weak  current  621.38 

Electrical    instruments  &   meters    621.37 

measurements  621.37,   537.7 

Electrically   controlled  manual 

block    signals  656.256.2 

Electricity   (physics)  537 

Application    of  621.39,    537.8 

applied  to  medicine  537.87 

Atmospheric  537.4 

Dynamical  537.5 

Generation  of  621.31 

Heating  by  697.7 

^liscellaneous    applications   of     621.39 

Nature  of  537.1 

Statical  537.2 

Theory  of  537.1 

Transmission   of  621.319 

Electrodes    for   voltaic  cells       621.352.2 

Electrodynamics  537.6 

Electrolysis  621.352.4 

by  stray  currents  621.333.167 

Electrolytic  rectifiers  621.313.74 

Electrolytes    for   voltaic   cells     621.352.4 

Electro-metallurgy  537.85 

Electrometers  621.374.3 

Electroplating  for  protection         691.794 

Electro-pneumatic  interlocking 

devices  656.257 

Electrostatic  apparatus  621.315 

T'llcctro-therapcutics  537.87 


I 


RELATIVE   INDEX 


91 


Elements,  Chemical  661.1 
Elevated   railways  625.4 
Electric                                       621.331.343 
Elevators  621.87 
Grain  725.36 
Hydraulic  621.263 
Embankments    (levees,   etc.)  627.4 
Emery  553.65 
Emery  wheels  621.923 
Employees    (shops  and  manu- 
factories) 621.705 
Accidents    to    railway  656.285 
Enamel  666.2 
Enameling    iron    and    steel        669.185.7 
Energy,   Conservation   of  531.6 
Engine,  of  locomotives  621.134 
parts,   Design  of  621.11 
shafts  621.824 
Engineering  620 
Bridge  624 
Canal  626 
compends  620.2 
contracts  and   specifications       62(003) 
costs  62(002) 
dictionaries,  etc.  620.3 
drawings  and  designs  62(004) 
education  620.7 
Electrical  621.3 
Heavy  current  621.3  L-.37 
Weak  current  621.38 
essays  620.4 
handbooks  620.2 
History  of  620.9 
Hydraulic  621.2 
instruments  620.7 
materials  620.1 
Mechanical  621 
Military  623 
Mining  622 
Naval  623 
periodicals  620.5 
quantities  and  costs  62(002) 
Railroad   and  road  625 
reports  62(009) 
River,  harbor,  hydraulic  627 
Sanitary  628 


Statistics  of  62(001) 
Steam  621.1 
Steam  marine  621.12 
societies  620.6 
Study  and  teaching  of  620.7 
tables  and  calculations  620.8 
Telegraph  and  telephone  621.38 
works  621.7 
Engines,  Automatic  shaft  gov- 
ernor 621.164.3 
Alcohol  621.434.24 
Binary  vapor  621.44 
Blast  furnace  blowing  621.61 
Blowing  621.6 
Compressed  air  621.42 
Dredge  621.167 
Fire  621.68 
Funicular  621.262 
Gas  (see  Gas  engines)  621.43 
Gasoline  621.434.21 
Hauling  621.167 
Heat  621.4 
Hoisting  621.167 
Hoisting  (mining)  622.672 
Hot  air  621.41 
Hydraulic  621.2 
Kerosene  621.434.22 
Locomotive  621.134 
Marine  621.12 
Portable  621.15 
Pumping  621.64 
Releasing  gear  (Corliss,  etc.)  621.164.4 
Resistance  of  (locomotive)  656.221.3 
Rotary  621.166 
Single  acting  621.164.5 
Solar  621.47 
Special  types  of  621.167 
Stationary  621.16 
Throttling  621.164.2 
Traction  621.14 
Types  of  engines  621.112 
vapor,  Binary  621.44 
Water  pressure  621.25 
Wind  621.45 
Engraving  760 
Equalizing  levers.  Locomotive    621.135.3 


91' 


RELATIVE   INDEX 


Equipment  of  drafting  rooms       621.712 
of  forge  shop  621.732 

of   foundry  621.742 

of  machine  shop  621.752 

Erecting  (machinery)  621.755 

Essays,  Engineering  620.4 

Estimates  (building  construction)  692.5 
Estimates  (shops  and  manufac- 
tories) 621.706 
E.xcavation  (mining)  622.21 
Exhaust  pipe,  Locomotive  621.133.5 
Exhaust  steam,  Heating  by  697.53 
Exhausters  621.62 
Exploitation  of  mines  622.3 
Exploration  (mining)  622.1 
Explosions  in  mines  (see  Mines)  622.81 
Explosives  (chemical  tech.)  662 
for  mining  622.237 
Exposition  buildings  624.94 
Exterior  illumination  by  elec- 
tricity 621.321.3 
Extraction   (mining)                             622.6 


Factories,  Sanitation  of  628.51 

Carriage  and  car  (architecture)  725.45 

Textile  (architecture)  725.41 

Fan  blowers  and  exhausters  621.62 

Fans  (ventilation)  697.98 

Fastenings    (machine  design)  621.88 

Fatigue  of  metals  620.112.3 

I'aults   (mining)  622.16 

Feed    water,    appliances  621.197.2 

Boiler  621.184.13 

filters,  etc.  621.197.2 

heaters  621.197.2 

purifiers  621.197.2 

Treatment    of  621.194.3 

Feeders    (electric   traction)  621.332.17 

Felt   roofing  095.7 

Fences    (railway    or    road)  625.162 

Fertilizers  made  from  town  wastes  628.49 

Filing  machines  621.92 

Filter  basins  628.16 

presses    (sewerage)  628.343 


Filters,   Feed   water  621.197.2 
Filtration  of  sewage  628.35 
Fire  bo.x  of  locomotives  621.133.2 
Fire  clays  553.61 
Fire  engines  621.68 
Fireplaces,   Heating  by  697.1 
Fire-proofing    (building   construc- 
tion) 693.8 
of  columns  693.85 
of  floors  693.83 
of  girders  693.86 
of   partitions  693.82 
of  roofs  693.84 
of  trusses  693.87 
of  vaults  693.88 
of  walls  693.82 
Systems  of  693.81 
Fire  tube  boilers  621.184.25 
Flaming  arc  lighting  621.325.6 
Flanging  machinery  621.984 
Flash  generators  621.184.27 
Flat  cars  625.241 
Floaters   (boiler)  621.184.72 
Flood  gates  621.29 
Floor  tiles  691.471 
Floors  and  flooring  (architecture)  721.6 
of  bridges  624.2 
Floors,  Fireproofing  of  693.83 
Flow  of  air  in  pipes  621.534 
of  fluids  536.74 
of    liquids  532.5 
of  rivers  532.5 
of  steam  621.185.1 
of  water   in   pipes  532.5 
Muc  gases  and  dusts  669.85 
Flues    (sewer   ventilation)  628.233 
Boiler  621.184.57 
Fluids.  Flow  of  536.74 
l'"lushing  shafts  and  fixtures 

(sewers)  628.254 
Force  and  its  measure  531.21 
Forced  draught  621.183.85 
Force,  Tractive,  of  locomo- 
tives 021.131.1 
I'orco.  Transmission   of  531.8 


RELATIVE   INDEX 


93 


Forge  shop  621.73 

Arrangement  of  621.731 

Equipment  of  621.732 

Materials  and  supplies   for  621.738 

Forging,  Drop  621.734 

Iron   and  steel  669.184.1 

machines.  Hydraulic  621.266 

processes  621.733 
Forms  and  centers  for  reinforced 

concrete  693.72 

Foul   air   ducts    (ventilation)  697.95 

Foundations   (architecture)  721.1 

Boiler       ,  621.184.57 

Founding  of   iron   and   steel  669.17 

Foundries   (architecture)  725.43 

Foundry  621.74 

Arrangement  of  621.741 

Cupola  practice  621.745 

Equipment  of  621.742 

irons,    Chemistry    of  621.745 

Materials   and   supplies   for  621.748 

Four-cycle  gas   engines  621.432.1 

Frame   plates.    Locomotive  621.135.1 

Frames,    Car  625.211 

Hoisting  622.675 

Locomotive  621.135.1 

Freehand  drawing  741 

Freezing  of  mains  628.15 

Freight — and  terminal  stations      656.212 

Freight  cars  625.24 

Details   of  construction  of  625.246 

Use   and   distribution   of  656.223.2 

Weight  and  capacity  of  625.24 

Freight,  Classification  of  656.235 

dangerous  and  perishable. 

Transportation  of  656.227 

rates  656.235 

service  656.225 

stations    (railway)  725.32 

trains.   Resistance  of  656.221.1 

Frequency  changers  621.313.55 

converters  621.313.67 

indicators  or  meters  621.374.7 

Fresh    air    ducts     (ventilation)       697.04 

Friction  531.4,   621.89 

brakes  531.4 


clutches 
of  gears 

of  steam  in  pipes 
Theory  of 
Fuel,  consumption 

of   locomotives 
conveyors 
economizers 
for  locomotives 
gas,  Heating  by 


621.825 

621.832 

621.185.1 

531.4 

621.182.3 

621.133.1 

621.183.78 

621.197.2 

621.133.1 

697.62 


Fuels,   Comparative  consump- 
tion of  621.182.4 
for  boiler  heating  621.182.2 
Fumes,    Prevention  of                     628.511 
Funicular  engines  621.262 
Furnace  appliances  (boiler)         621.183.7 
fittings  621.183.5 
grates  621.183.52 
Furnaces   (boiler)  621.183 
Blast  roasting  669.831.7 
Distillation  669.834 
Hot   air  697.3 
Liquation  669.833 
Melting  669.837 
Metallurgical  669.83 
parts.  Construction  and  details 

of  621.183.5 

Smelting  669.832 

Sublimation  669.835 

Types   of  621.183.2 


Gage  cocks    (locomotive) 

621.133.9 

glasses  (boiler) 

621.184.72 

Gages,   Compressed  air 

621.532 

Boiler  water 

621.184.72 

Steam 

621.197.7 

Steam  pressure 

621.184.73 

Galvanizing    (protection   of 

iron)                          691.793 

,   669.185.4 

Galvanometers                    537.86 

621.374.4 

Garages 

725.38 

Garbage 

628.44 

Gas  and  steam  fitting 

696 

Gas  engine  power  plants 

621.434.1 

94 


RELATIVE   INDEX 


Gas  engines 

Applications   of 
to  air  ships 
to  automobiles 
to  farm  machinery 
to  marine  service 
to   motor  boats 

Four-cycle 

Parts   and   accessories   of 

Theory   of 

Two-cycle 

using    blast    furnace    gas 

using  acetylene 

using  alcohol 

using  gasoline 

using  illuminating  gas 

using  kerosene 

using  natural  gas 

using  producer  gas 

using  solid  fuels 
Gas,  Heating  by 

illuminating 

Natural 

producers 

turbines 
Gases 

(chem.   tech.) 

Flue 

Kinetic    theory    of 

Laws  of  compressibility  of 

Physical  theory  of 

Properties  of 

Sampling  of 

Thermodynamics  of 
Gasoline  engines 
Gates,  Architecture  of 

Flood 
Gearing,    Belt 

Chain 

Friction 

Machinery  and   mill 

Ratchet 
Gears 

Bevel   and    skew   bevel 

Construction  of 

Cutting    and    casting  of 


621.43 

Design  of 

621.833 

62L438 

Draft 

625.216 

62L438.7 

Efificiency  of 

621.832 

621.438.4 

Friction   of 

621.832 

621.438.3 

Spur 

621.833.1 

621.438.6 

Tests  of 

621.832 

621.438.5 

Valve 

62L84 

621.432.1 

Worm  and  spiral 

621.833.3 

621.437 

Generation    of    electricity 

621.31 

621.431 

of  steam 

621.18 

621.432.2 

Generators,   Alternating   cur- 

621.434.13 

rent 

621.313.43 

621.434.15 

Continuous  current 

621.313.23 

621.434.24 

Double  current 

621.313.56 

621.434.21 

Flash 

621.184.27 

621.434.12 

Induction 

621.313.63 

621.434.22 

Geology 

550 

621.434.11 

Applied  (mining) 

622.11 

621.434.14 

Economic 

553 

621.434.3 

Geometry 

513 

697.6 

Analytical 

516 

665.7 

Descriptive 

515 

553.28 

Girders,    Fireproofing   of 

693.86 

621.434.14 

for  bridges,  Trussed 

624.08 

621.433 

Lattice    (metal) 

624.3 

533 

Glass 

666.1 

665 

Glass  (building  material) 

691.6 

669.85 

Glazing 

698 

533.7 

Gold,    Metallurgy   of 

669.2 

533.2 

Alloys  of 

669.213 

533 

Chlorination  of 

669.218 

533.1 

Economic    factors    concerning   669.211 

669.913 

Properties  of 

669.212 

536.71 

Plants   for   the  prod,   of 

669.219 

621.434.21 

Governmental  buildings 

725.1 

720.8 

Grades  and  curves    (railways 

)      625.113 

621.29 

Grain  elevators 

725.36 

621.8.52 

Granite  (building  material) 

691.221 

621.835 

(iranitcs    (geology) 

5.53.52 

621.858 

Graphic  statics 

531.3 

621.85 

Graphitic  anthracite  coals 

553.25 

621.837 

Grates,  Furnace 

621.183.52 

621.83 

Locomotive 

621.133.2 

621.833.2 

Gravel   roofing 

695.7 

621.834 

Gravity 

.531.5 

621.834 

Green  sand  molding 

621.743 

I 


RELATIVE   INDEX 


95 


Grilles,   Architecture   of  720.8 

Grinding  machinery  621.92 

Grinding  machines    (cylinder  and 

surface)  621.932 

Guide  vanes  (steam  turbines)  621.165.13 
Guys  for  overhead  lines  621.319.223 


H 


Hair  for  building  691.92 

Hammers,  Power  621.97 

Pneumatic  621.542 

Hand  books,   Engineering  620.2 

Hand  signals  656.252 

Hanging  of  boilers  621.184.56 

Harbor  engineering  627 

Harbors  627.2 

Shipping   facilities  of  627.3 

Hardness  of  materials  620.112.6 

Haulage  in  mines   (see  Mines)         622.6 

Hauling  engines  621.167 

Head  and  tail   races  621.29 

Heat  536 

Applications  of  536.8 

combustion  536.46 

Communication  of  536.3 

Effects  of  536.4 

engines  621.41 

motors,  Thermodynamics  of         536.73 

Reflection,  refraction,  radiation, 

and    absorption   of  536.3 
tables,   problems,   and   questions   536.9 

Theory   and  nature   of  536.1 

Heaters,  Feed  water  621.197.2 

Heating   and    ventilation  628.8,    697 

by  fireplaces  697.1 
by  gas   (acetylene,  fuel,  natural, 

illuminating)  697.6 

by  hot  air  furnaces  697.3 

by  hot  water  697.4 

by  steam  697.5 

by  stoves  697.2 

of  cars  625.234 

of   railway   stations  656.215 

Hemp    rope   transmission  621.853 


Hennebique  system    (reinforced 

concrete)  693.714 
Highways  635.7 
from  economic  aspect  386 
History  of  engineering  620.9 
Hoisting   engines  621.167 
in    mines    (see    Mines)  622.6 
machinery  621.86 
Hoists  621.862 
Hydraulic  621.263 
Hollow  concrete  blocks  693.53 
Hollow    tile    for    building    con- 
struction 693.4 
Homopolar  machines                  621.313.291 
Hopper   cars  625.242 
Horseless  vehicles.   Transporta- 
tion by  656.3 
Horsepower  of  locomotives          621.131.1 
Plospitals  725.5 
Hot  air  engines  621.41 
Furnaces  697.3 
Hotels  (railway  service)  656.26 
Hot  water  heating  697.4 
High  pressure  697.41 
Low  pressure  697.42 
Low   pressure  with    steam 

mains  697.43 

House  drainage  628.6 

House    drains    (ventilation)  628.235 

House   wiring  621.328.2 

Hydraulic  cranes  621.263 

devices  used  in   steel  works       621.264 

elevators  621.263 

engineering  627 

engines  and  motors  621.2 

forging  621.733 

machines  621.266 

hoists  621.263 

lime  691.52 

machinery    and    appliances  621.26 

for  steel  works  621.264 

mining  appliances  621.269 

presses  621.266 

pumps  621.252 

injection  621.267 

rams  621.27 


96 


RELATIVE   INDEX 


Hydraulic,    rams. — tonti)iucd. 


compressing 

621.;i74 

lifting 

621.272 

pumping 

621.273 

stamping  machines 

621.266 

tackle 

621.262 

tunneling  devices 

621.269 

Hydraulics    (general  theory) 

532 

Hydrostatics 

I 

Ice  machines 

532 

621.5 

making 

621.58 

Can  system  of 

621.581 

Plate  system  of 

621.582 

Illuminating  gas 

665.7 

Illumination  by  electricity 

621.321 

Decorative 

621.321.4 

Exterior 

621.321.3 

Interior 

621.321.2 

Impact  tests 

620.112.5 

Impurities  in  water 

628.16 

Incandescent  lamps 

621.326 

Carbon  filament 

621.326.3 

Metal  filament 

621.326.4 

Metallized  filament 

621.326.31 

Osmium  filament 

621.326.44 

Platinum  filament 

621.326.41 

Tantalum  filament 

621.326.42 

Tungsten  filament 

621.326.43 

Vapor   lighting 

621.327 

Incandescent  lighting 

621.326 

Inclined    railways 

625.3 

Incrustation   of   boilers 

621.194.4 

Indicators,  Frequency 

621.374.7 

Steam    engine 

021.197.7 

Indirect   blocking   systems 

056.258 

Induction,  apparatus,  Station 

- 

ary 

021.314 

coils 

621.314.7 

generators 

621.313.63 

motors 

621.313.64 

Industrial   sanitation 

628.5 

Injection    pumps,    Hydraulic 

621.207 

Injectors  (boiler  plants) 

021.197.3 

Injectors    (locomotive) 

021.133.7 

Inlets    for   sewers 
Inspection  of  boilers 

of  reinforced  concrete 
Instruments,  Engineering 

for  boiler  tests 

for  engine  tests 
Insulating   materials 
Insulators 

Pins  for 


028.255 

021.184.55 

693.73 

620.7 

621.197.7 

621.197.7 

621.319.37 

621.328.5,  621.319.4 

621.319.224 


Insurance,    Compulsory  331.2 

Intercepting  sewers  628.27 

Interior   illumination   by   elec- 
tricity 621.321.2 
Interior  wiring  621.328.2 
Interlocking  devices, 

Electro-pneumatic  656.257 

Interlocking   switch    and    signal 

apparatus  656.257 

International    agreements    relative 

to  railways  385.6 

Interstate   commerce   commission     385.7 

Interurban  electric  railways       621.331.33 

Iron,  Alloys  of  669.13 

Analyses  and  tests  of  669.121 

Bessemer  process  for  refining 

of  669.153 

Acid  669.153.1 

Basic  669.153.2 

Chemical   properties   of  069.124 

liconomic  factors  concerning       669.11 

Electric  furnaces  for  refining 

of  669.154 

E.xtraction  of  009.14 

Blast  furnace  process  for        069.142 

Direct   process    for  669.141 

Electric  furnace  process  for  669.143 

Forging,   etc.   of  669.184.1 

Founding  of  669.17 

Galvanizing   of  669.185.4 

in  building  construction  691.7 

mains  and  service  pipes  628.15 

Manufacture  of  609.14 

^r^'ltiIlg    of  609.171 

Metallurgy  of  669.1 

Mixtures  of  (foimdry)  621.74.") 

Moulding   of  609.172 


RELATIVE   INDEX 


97 


Iron.- — Continued. 
Nature   and  properties  of  669.12 
Open  hearth  process  for  refin- 
ing of  669.152 
Acid  669.152.1 
Basic  669.152.2 
ore  553.3 
Painting   of    (protection)  691.791 
Physical  properties  of  669.123 
Protection  of  691.79 
Puddling  process   for  refining 

of  669.151 

Purification  of  669.15 

roofing  695.5 

Structure   and   composition  of   669.12 

structures    (architecture)  721.9 

Tests  of  620.17 
Working,  manipulation  and 

treatment  of  669.17,  669.18 

Irons,   founding,   Chemistry  of     621.745 

Irrigation   by   sewage  628.36 

J 

Jack  knife  bridges  624.87 

Jet  553.22 

Jet   condensers  621.197.63 

Jetties    (river   engineering)  627.6 

Jigs,   Construction   of  621.756 

Joinery  694 

Joints,   Screw  696.5 

Riveted  696.4 

Rust  and  caulked  696.6 

Journals  621.821 

Junctions   (railway)  625.153 


K 

Keene's  cement  691.57 

Keys  621.883 

Kerosene  engines  621.434.22 

Kinematics,   General   theory  of         531.1 

Kinetic  theory  of  gases  533.7 

Kinetics  531.3 

Knife    switches    (electric)  621.317.32 


Laboratories    (architecture)  727.5 

Labor  and  wages  331 

Labor,  Cheap  foreign  331.6 

Child  331.3 

Convict  331.5 

Hours  of  331.81 

Organization  of  331.87 

Payment  of  621.705 

Pauper  331.6 

Places  of  danger  for  331.82 
Premium   system   of   paying       621.705 

Relation  of,  to  capital  331.1 

Skilled  331.7 

strikes  331.89 

trade  unions  331.88 

unions  621.705 

Unskilled  331.7 

Women  331.4 

Lciboring  classes  331.8 

Food,  clothes,  shelter   for  331.83 
Helps,  lectures,  libraries  and 

reading  rooms  for  331.85 
Morals  and  habits  of  331.84 
Training  and  apprenticeship  for  331.86 
Lamp  posts   as  ventilators  628.232 
Lamps,  Arc  (See    Arc  light- 
ing) 621.325 
Incandescent   (See  Incandes- 
cent lighting)  621.326 
Nernst  621.326.53 
Land,   Drainage  of  627.5 
Land,  Reclamation  of,  from  tides 

and  waves  627.5 

Lapping  machines  621.922 

Lathes,  Metal  turning  621.942 

Wood  turning  621.943 

Latrines  628.45 

Lattice  bridges,  Metal  624.3 

Laws,  Building  692.9 

Engineering  62(007) 

of  compressibility  533.2 

Plumbing  696.9 

Lead   accumulators  621.355 

Cadmium  lead  types  621.355.58 


I 


98 


RELATIVE   INDEX 


Lead  accumulators. — Continued. 

Care  and  handling  of  621.355.18 
Combined  Plante  Faure 

types  621.355.4 
Complex  Oxid  types  621.355.52 
Copper  lead   types  C21.355.56 
Faure  types  621.355.3 
Lead   element  of  621.355.55 
Plante  types  621.355.2 
Zinc  lead  types  621.355.57 
Lead,  Alloys  of  669.43 
Economic   factors  cone.  669.41 
Leaching  of  669.47 
Metallnrcy  of  669.4 
Plants  for  prod,  of  669.49 
Properties  of  669.42 
Refining  of  669.47 
Roasting  of  669.44 
Smelting  of  669.45 
Lead  mains   and   service  pipes       628.15 
Levees    (river   engineering)  627.4 
Liabilities   of   architects  692.9 
of   contractors  692.9 
of  owners  692.9 
Lien   laws    (building  construc- 
tion) 692.98 
Liernur    system    of    sewerage  628.213 
L'Rht  535 
Lights,   Search  621.325.7 
Lighthouses  627.9 
Lighting  628.9 
Arc  621. ,325 
Electric  621.32 
Incandescent  621.326 
^^  cars  625.233 
of  mines  622.46 
of  railway  stations  656.215 
Lightning  arrestors                       621.319.82 
rods  537.4 
Lignite  553.22 
Lime  concrete  691.35 
Lime   for  building  691.5 
Ilyrlraulic  691.52 
Ordinary  691.51 
Selenitic  691.53 
Limes  and   mineral  cements  553.68 
Limes   Crhemical  technology)  666.9 


Limestone   (building  material)       691.211 
Limestone   (geology)  553.51 

Lines,  Electric  621.319.2 

Liquids  532 

Liquids,  Flow  of  •         532.5 

Loam  molding  621.743 

Location   and   survey    (railways)    625.11 

of  manufactories 

of  shafting  and  machines 
Locking   of  draw-bridges 
Locomotive 

ash  pit 

axles 

boiler.  Attachments  to 

boilers 

r,    transverse 


bracini 

brakes 

boxes 

cranes 

cylinders 

dome 

Engine  of  the 

exhaust  pipe 

firebox 

frame  plates 

frames 

fuel  consumption 

fuels 

gage  cocks 

grates 

injectors 

pistons  and  rods 

pumps 

repair  shops 

running  gear 

safety  valves 

shell 

slide  valves 

smokebox    and    stack 

springs,  saddles,  equalizing  lev 


621.701 
621.751 
656.258 
621.13 
621.133.2 
621.135.2 
621.135.1 
621.133 
621.135.1 
621.135.5 
621.135.2 
621.875 
621.134.1 
621.133.6 
621.134 
621.133.5 
621.133.2 
621.135.1 
621.135.1 
621.133.1 
621.133.1 
621.133.9 
621.133.2 
621.133.7 
621.134.1 
621.133.7 
621.138.5 
621.135 
621.133.9 
621.133.3 
621.134.2 
621.133.4 


Stays 

tenders    (See    Tenders) 

Tiieory  of  the 

tbrnttlc 

trucks 


621.135.3 
621.133.2 
621.136 
621.131 
621.133.6 
621.135.4 


RELATIVE   INDEX 


99 


Locomotive. — Continued. 

tubes  621.133.3 

valves  621.134.2 

wheels,  boxes,  and  axles  621.135.2 

Locomotives,   Adhesion   of  621.131.1 

Combustion  of  fuel  in  621.133.1 

Compound  621.134.4 

Counterbalancing  of  621.135.2 

Driving  mechanism  of  621.134.1 

Electric  621.334.2 

Horsepower  of  621.131.1 

Lubrication  of  621.134.5 

Maintenance  and  repair  of  621.138 

Management  of  621.137 

Mine  622.662 

Production    of    steam    in  621.133 

Scale  prevention  in  621.133.7 

Steam  distribution  in  621.134.2 

Supplies  and  materials  for  621.139 

Suspension   of  621.135.3 

Tests   of  621.131.3 

Tractive  force  of  621.131.1 

Types  of  621.132 

Longwall  methods   (mining)  622.331 

Long   distance  communication       656.254 

Lubricants  621.89 

Lubricants    (railway^  cars)  625.214 

Lubrication   of  locomotives  621.134.5 

M 

Macadamizing  of  roads  625.8 

Machine  molding  621.744 

parts,   Designs   of  621.8 

shops  621.75 

Architecture  of  725.43 

Arrangement  of  621.751 

Equipment  of  621.752 

Supplies   and    materials    for  621.758 

Tool   making  for  621.756 

tools  621.9 

Design   of  621.901 

Power    required   for  621.902 

(shop   equipment)  621.752.1 

Machinery  and   mill  gearing  621.85 

Bending  621.982 

Bolt  and  nut  621.99 


Dredging  627.7 
Drilling  621.953 
Flanging  and  die  press  621.984 
Hoisting   and   conveying  621.86 
Metal  sawing  621.932 
Nail  and  rivet  621.97 
of   transmission  621.8 
Perforating  621.95 
Punching  and  shearing  621.96 
Wood  boring  621.953 
Wood  planing  621.913 
Wood  sawing  621.933 
^Machines,  Grinding  and  filing         621.92 
Pipe  threading  621.944 
Planing  621.91 
Refrigerating  621.57 
Screw  621.99 
Tapping  621.955 
Theory  of  531.8 
Machining  iron  and  steel             669.184.5 
Magnetic  surveys  622.15 
Magnetism  533 
Mains,   Compressed   air  621.532 
Freezing  of  628.15 
Water  628.15 
Maintenance  of   locomotives  621.138 
^laintenance   of   way  625.17 
Malleable    cast   iron    (in    build- 
ings) 691.72 
Malleable  cast  iron,  Manufac- 
ture of  669.183 
Management  of  locomotives  621.137 
^Manganese  steel  669.132 
Manholes    (boilers)                      621.184.55 
for  sewers  628.253 
for  underground    transmis- 
sion                                     621.319.234 
Manometers.  Boiler                      621.184.73 
Manual  block  signals,  Electric- 
ally controlled                    656.256.2 
Manufactories  621.7 
Architecture   of  725.4 
Location   of  621.701 
Organization  and  administra- 
tion of  621.704 
Shipping  facilities  of  621.701 


100 


RELATIVE   INDEX 


Manufactures   (miscellaneous)  670 
Manures,  Sewage  628.38 
Marbles   (geology)  55:i.5l 
Marine  boilers  621.184.22 
-    engines  621.12 
Markets   ( huildings)  624.94 
Masonry    (building  construction)        693 
Adhesive   tests  of  020.15 
Boiler  621.184.57 
Materials,    Strength   of  539.4     620.1 
Building  691 
Mathematics  510 
Mathematical  drawing  744 
Measurements,   Electric  621.37     537.7 
Measures,  Weights  and  389 
Mechanical  concentration  (misc.)   622.77 
concentration  (wet)  622.7.5 
crushing  622.73 
engineering  621 
haulage   (mining)  622.66 
preparation  of  coal  (See  Coal)  622.78 
preparation   of   mine    products     622.7 
screening  622.74 
slime   treatment  622.76 
stokers  621.183.6 
Mechanic  trades  680 
Mechanics  531 
Applied  620.1 
Tables,  problems,  questions  re- 
lating to  531.0 
Mechanism   of   steam   engine  621.11 
Mechanism,  Principles  of  621.81 
Mediaeval   architecture  723 
Medicine,    Application    of  elec- 
tricity to  537.87 
Mercury,  Metallurgy  of  669.7 
Mercury  vapnr  lamps  621.327.4 
Metallurgical   furnaces  660.83 
Mctallurg>'  669 
of  copper  669  3 
of  gold  and  silver  669.2 
of  iron  669.1 
of  lead  669.4 
of  mercury  669.7 
of  tin  669.6 
of   zinc  669.5 


Aleial  tilanicnt  incandescent 

lamps  621.326.4 
Metalized    filament    incandes- 
cent  lamps  621.326.31 
:\Ietallography  669.89 
-Metal  mining,   Methods  of  622.34 
planers,   shapcrs,  slotters  621  912 
roofing  695.4 
sawing  and  cutting  machinery  621.932 
turning  lathes  621.942 
Metals,  and  alloys  of  669.88 
Fatigue  of  G20. 112.3 
Sampling  of  669.912 
Meter  transformers  621.314.38 
Meters,  Electric               621.373,  621.328.6 
Ampere  hour  621.374.4 
Calibration  of  621.372 
Current  621.374.4 
Electromotive  force  621.374.3 
l-'reciuency  621.374.7 
General   types   of  621.371 
Phase  and  power   factor         621.374.91 
Potential  621.374.3 
Power  621.374.6 
Recording  621.373 
Resistance,  inductance,  capac- 
ity 621.374.2 
Special  621.374 
Standards    for  621.372 
Switcliboard  621.317.6 
AN'ater  628.17 
\\'att  hour  621.374.5 
Watt  meters  621.374.6 
Middens  628.41 
Militarj'  engineering  623 
transportation  656.229 
Mill  dams  621.29 
gearing  621.85 
sluices  621.29 
Milling  machines  621.91 
Mills,   Architecture  of  725.41 
Rolling  and  drawing  621.77 
Wind  621.45 
Mill  work  621.8 
Mine,  accidents  622.8 
First  aid   in  622.862 


RELATIVE   INDEX 


101 


Mine. — Co  n  tinned. 

cars,   trams,  etc.  622.63 

doctors  622.867 

employees,  Buildings   for  622.97 

excavation  622.21 

Water  for  622.215 

hospitals  622.868 

prospectuses  622.19 

rescue  and  relief  622.86 

surveying  622.14 

Mineral,  cements  533. 6S 

material.  Tests  of  620.195 

oils  665.4 

preparation  plants  622.79 

properties,   Examination  of  622.18 

surveys  622.131 

wool   (building  material)  691.91 

Mineralogy  549 

Miners,  Accidents  to  622.85 

Insurance  and  compensation  of  622.860 

Sickness   of  622.87 

Mines,   Boring  in  622.24 

Breaking   solid    ground    for  622.23 

Cable  ways  and  grab  buckets 

for  622.213 
Dams  and  water  tight  linings 

for  622.56 

Dangers  and  accidents   in  622.8 

Drainage  of  622.5 

Without  raising  water  622.52 

Drilling  in  622.235 

Explosions   in  622.81 

Coal  dust  622.812 

Marsh  gas  622.811 

Extraction  of  minerals  from  622.6 

Fan  houses  for  622.95 

Fires  in  622.82 

Coal  622.823 

Gob    fires  622.822 

Sulphide   ore  622.824 

Flooding  of  622.84 

Fusible  deposits   in  622.37 

Handling  of  minerals  in  622.61 

Hand   pumps   for  drainage  of     622.58 

Haulage  in  622.6 

by   men    and   beasts  622.65 

Mechanical  622.66 


Mines. — Co  iitin  u  cd. 
Hoisting  engines  in  622.672 
Hoisting   in  622.6 
by  men  and  beasts  622.65 
Mechanical  622.67 
Hoisting   of   water   in  622.55 
Lighting  of  622.46 
Liquid  and  gaseous  deposits  in  622.38 
Locomotives   for  622.662 
Models  of                           ^  622.17 
Offices   for  622.91 
Open   working   of  622.31 
Placer  working  of  622.32 
Power  plants  for  622.94 
Shops   for  622.93 
Signaling  in  622.48 
Siphon     for  drainage  of  622.59 
Soluble   deposits  622.36 
Special  waters  in,  Handling  of  622.57 
Stables    for  622.96 
Store  houses  and  yards   for         622.92 
Surface  plants  of  622.9 
Arrangement  of  622.99 
Fire  protection  for  622.98 
Surface  pumps  for  drainage  of  622.53 
Theory  of  drainage  of  622.51 
Thick  deposits  in  622.35 
Transportation  in  622.6 
by  gravity  622.64 
Railway  622.692 
Surface  622.69 
Tramway  (aerial)  622.693 
Underground  pumps  in  622.54 
Underground  roads  in  622.62 
Ventilation  of  622.4 
Air-ways,  etc.,  for  622.45 
Fans  and  blowers  for  622.44 
Natural  622.42 
Mechanical,  without  machin- 
ery 622.43 
Theory  of  622.41 
Working  of  622.3 
Mining,    Appliances,    Hydraulic     621.269 
Coal  (methods  of)  622.33 
engineering  622 
faults  622.16 
Metal  622.34 


I 


102 


KKLATIVE   INDEX 


Milling. — Coutiiiued. 

Placer 

622.32 

Practical 

622.2 

Mixing  machinery  (sewerage 

)        628.342 

Mixtures  of  iron   (foundry) 

621.745 

Modern  architecture 

724 

Molding  machines 

621.744 

processes 

621.743 

Molecular  physics 

539 

structure 

539.1 

Molybdenum  steel 

669.135 

Moore  lamp 

621.327.5 

Mortars    (chemical   technolog 

y)        666.0 

Motor  cars  (for  electric  trac- 

tion) 

621.334.3 

Motor-convertors 

621.313.57 

Motors,  Air 

621.541 

Animal 

621.46 

Automobile 

656.322 

Constant  speed 

621.313.245 

Continuous  current 

621.313.24 

Hydraulic 

621.2 

Induction 

621.313.64 

Repulsion 

621.313.66 

Series  A.  C. 

621.313.65 

Synchronous 

621.313.44 

Mountain  railways 

625.3 

Movable   bridges    (see    Bridges. 

Movable) 

624.8 

Muffles 

669.831.6 

Multiplex   telegraphy 

621.382.35 

N 


Nail  and   rivet   machinery  621.97 

Natural,  cement  691.54 

gas  553.28 

Heating  by  697.63 

Naval  architecture  623.8 

engineering  623 

Nernst   lamps  621.326.53 

Nickel  steel  669.131 

No/zlcs   Cstcam   turbine)  621.165.13 

Nut   ni.'uliiiiory  621.99 


Ocean  transportation  387 
Office  equipment  651 
methods  651 
Ohm  meters  621.374.2 
Oils   (chemical  technology)  665 
Animal  665.2 
Mineral  665.4 
Vegetable  665.3 
Oil  switches,  Electric  621.317.35 
Open  hearth  processes  669.152 
Acid  669.152.1 
Basic  669.152.2 
Operating  systems    (transporta- 
tion) 656.254 
Operation   of  tributary  railways     656.27 
of  railway  lines  with  light 

traffic  656.27 

of  railways  656 

of  signal  systems  656.257 

of  street  railways  625.612 

of  switch    signals  656.257 

Optics  535 

Ore  concentrators  622.75 

deposits  553.1 

dressing  622.7 

Ores   of   iron  553.3 

of  metals  other  than  iron              553.4 

Sampling  of  669.911 

Organization  of  manufactories 

and  shops  621.704 

Oriental  architecture  722 

Oscillographs  621.374.7 
Osmium  filament  incandescent 

lamps  621.326.44 

Outfall    (sewerage)  628.217 

Outfall  sewers  628.27 

Overshot  water  wheels  621.22 

Owners,  Liabilities  of  692.9 


Packings,    Steam  621.185 

Painting  698 

Painting  iron  and  steel  601.791 


RELATIVE   INDEX 


103 


Panels   for  interior   wiring 

621.328.3 

Panels,   Switchboard 

621.317.2 

Paper  for  building 

691.93 

Paperhanging 

698 

Paraffin 

665.4 

Parks,  Public 

725.7 

Parlor  cars 

625.232 

Partitions,  Fireproofing  of 

693.82 

Passenger  cars 

625.23 

Types  of 

62.5.23 

Use  and  distribution  of 

656.223.1 

Weight  of 

625.23 

rates 

656.234 

stations,  Arrangement  of 

656.211 

Lighting  of 

656.215 

Railway- 

725.31 

train  service 

656.224 

trains.  Resistance  of 

656.221.2 

Passes  and  reduced  fares 

656.234 

Patents    (engineering) 

62(008) 

Pattern  making 

621.724 

Pattern  shops 

621.72 

Arrangement   of 

621.721 

Equipment  of 

621.722 

Materials  and  supplies  for 

621.728 

Patterns,  Preservation  and  stor- 

age of 

621.727 

Pavements,   Sanitation   of 

628.47 

Stone 

625.82 

Wooden 

625.83 

Paving  of  roads  and  streets 

625.8 

stone 

625.81 

Peat 

553.21 

Penstocks 

621.29 

for  sewers 

628.257 

Perforating  machinery 

621.95 

Periodicals,  Engineering 

620.5 

Perishable   freight,   Transport 

a- 

tion  of 

656.227 

Perspective   drawing 

742 

Petroleum 

553.28 

for  locomotives 

621.133.1 

Phase  convertors 

621.313.68 

621. 313. .54 

indicators 

621.374.91 

Photography 

770 

Physical  properties  of  iron 

Physical  properties  of  sewage 

Physical  theory  of  gases 

Physics 

Physics,  Molecular 

Pickling  (iron  and  steel) 

Piece  work 

Piers    (architecture) 

(harbor   engineering) 

for  bridges 

for  suspension  bridges 
Pig  iron.   Manufacture  of 
Piles,  Masonry 

Metal 


669.123 

628.31 

533 

530 

539 

669.185.2 

621.705 

721.3 

627.3 

624.1 

624.54 

669.14 

624.14 

624.15 

Wooden,  for  bridge  foundation  624.13 
Pins,  Insulator  621.319.224 

Pipe  coverings  621.185.6 

fittings.  Compressed  air  621.532 

threading  machines  621.944 

Piping,    Compressed    air  621.532 

connections  for  steam  piping  621.185.3 
Joints  in  621.185.7 

of  refrigerating  systems  621.566 

Steam  621.185 

water,  High  pressure  621.253 

Piston  blowers  621.61 

Pistons,  Locomotive  621.134.1 

Placer  workings  622.32 

Planers    (for  metals)  621.912 

Planing  machines  621.91 

for  wood  621.913 

Plans  for  buildings  692 

Plastering    (building  construction)      693 
Plaster  of  Paris    (building  ma- 
terial) 691.56 
Tests  of  620.15 
Plate  system  for  ice  making 

plants  621.582 

Platinum   filament  incandescent 

lamps  621.326.41 

Plenum  system  of  ventilation         697.92 
Plug  &  feathers  (for  quarrying) 

622.221 
Plug  switches,  Electric  621.317.34 

Plumbing  696 

Plumbing  laws  696.9 


104 


RELATIVE   INDEX 


Pneumatic  block  signals 
Drills 
Hammers 
Tools 
Pneumatics 
Poles  for  overhead  lines 

Foundations  for 
Political  economy 
Pools,  agreements    (transporta 

tion) 
Porcelain 
Portable   boilers 

engines 
Portland   cement 
Postal  service  6r)6.224 

Potential  regulators    (see  Regu- 
lators) 621.314.5 
Power   factor   indicators             621.374.91 
Power  hammers  621.97 
Power  plants                                       621.312 
Mining  622.94 
Steam  end  of  621.19 
Testing  of                              621.312(007) 
Power  transmission,  Compressed 

air  621.53 

Precipitation   of  sewage  628.34 

by  lime  628.345 

by   salts  of  alumina  628.344 

by  salts  of  iron  628. 34G 

Precipitation  tanks  (sewerage)  628.341 
Premium  system  of  paying  labor  621.705 
Preparation  of  coal  622.78 

Preservation   of   patterns  621.727 

of  stone  691.29 

Preservatives    (building  materi- 
als) 691 
Presses.  Hydraulic                            621.266 
Pressure  gages,  Air                         621.532 
Steam                                              621.184.73 
Pressure  regulators  (steam)         621.185.4 
Pressure  steam  turbines             621.165.22 
Prevention  of  dust  and  fumes      628.511 
Primary   cells                                      621.353 
Closed   circuit                               621.353.6 
Double  fluid                                    621.353.4 
Open    circuit                                   621.353.5 


656.256.4 

Single  liquids 

621.353.3 

621.542 

Principles  of  mechanism 

621.81 

621.542 

Printing 

655 

621.542 

Prison  contracts 

331.5 

533 

Prisons    (architecture) 

725.6 

621.319.223 

Privies 

628.41 

621.319.223 

Probabilities,  Theory  of 

519 

330 

Processes,  Building 

691 

a- 

Professional  and  technical 

656.233 

schools 

727.4 

666.5 

Profiles  of  railways 

625.113 

621.184.23 

Profit-sharing 

331.2 

621.15 

Projection 

515 

691.55 

Propeller  shafts 

621.824 

Properties  of  gases  and  vapors  533.1 

of  iron  and  steel  669.12 
of  metals    (magnetic,  electric, 

etc.)  669 

of  refrigerating  fluids  621.564 
of  stone,   concrete,   cement, 

etc.  620.13 

of  solids  539.2 

Prospecting  622.12 
Protection  against  infection  from 

dust  628.513 

of  iron  and  steel  691.79 

of  stone  691.2 
of  throat  and  eyes  from  dust 

and  fumes  628.512 

of  trains  in  distress  656.254 
Protective  devices,   Switchboard 

621.317.8 
Transmission  lines                      621.319.8 
Public  buildings   (architecture)  725 
Puldic  halls   (masonry  construc- 
tion) 624.93 
(metal)  624.94 
Public  parks  725.7 
Publishing  655 
Puddling  processes   (see  Iron)  669.151 
Pumping,  by  compressed  air  621.546 
engines  621.64 
Tests  of  621.642 
stations    (sewerage)  628.29 
vs.  gravitation  systems    (wa- 
ter supply)  628.12 


RELATIVE   INDEX 


105 


umps,  Centr 

fugal 

621.67 

Circulating, 

for  steam 

plants 

621.197.3 

Direct  acting 

621.65 

Design  and 

corfstruction  of 

621.64 

General  theory  of 

621.641 

Hydraulic 

621.252 

Locomotive 

621.133.7 

Mining 

622.53— .54 

Piston 

621.65 

Rotary 

621.66 

Steam 

621.64 

Tests  of 

621.642 

Punching  and  shearing  machinery  621.96 
Purification  of  iron  669.15 

of  water  for  locomotives         621.133.7 
Purifiers,  Feed  water  621.197.3 

Pyrometers,    (steam  plant)  621.197.7 

Pyrometry  536.52     669.84 

Phyrotechnics    (chemical    technol- 
ogy) 663 


Quantities  and  costs.  Engineer- 


ing 

62(002) 

Quarrying  dimension  stone 

622.22 

Blasting  systems 

for 

622.224 

Quays 

R 

627.3 

Ratchet  gearing 

621.837 

Radial  axles 

625.215 

Radiation  of  heat 

536.3 

Rail  bonding 

621.333.4 

Rails   (electric  railways) 

621.333.2 

and  attachments 

625.143 

Railway,  bridges 

625.13 

cars   (see  Rolling  stock) 

625.2 

cross  ties 

625.142 

crossings 

625.153 

engineering 

625 

fences 

625.162 

freight  stations 

725.32 

junctions 

625.153 

passenger    statior 

s 

725.31 

Lighting  of 

656.215 

Road  bed  (see  Road  bed)  625.1 
rolling  stock    (see  Rolling 

stock)  625.2 

service.  Accessories  to  656.26 
shops,  roundhouses,  car  houses  725.33 

terminals  and  stations  656.21 

track   (see  Roadbed)  625.14 

tunnels  625.13 

Railways,   Administrative 

organization   of  385.4 

Competition  of  656.233 

with  steampship  lines  385.2 
Economic  and  financial  aspects 

of  385.1 
Elevated  and  underground  625.4 
Essays  on,  history  of  385.0 
Inclined  625.3 
International  agreements  rela- 
tive to  385.6 
Interstate  commerce  commission  385.7 
]\Iountain  625.3 
Operation  of  656 
Personnel  of  385.5 
Report  of,  statistics  of,  etc.  nS5.0 
Safety  appliances  of  656.35 
Ship  635.91 
State  control  of  385.3 
Street  635.6 
Survey  and  location  of  625.11 
Transportation  by  656.3 
Tributary  635.6 

Rams,  Hydraulic  621.27 

Compressing  621.274 

Lifting  621.272 

Pumping  621.273 

Ransome's  artificial  stone  691.32 
system  of  reinforced  concrete  693.712 

Rapid  transit  in  cities  388 

Rates.  Basing  and  differential  656.231 

for  baggage,  dogs,  etc.  656.234 

for  transportation  656.231 

Freight  656.235 

of  porterage  and  drayage  656.236 

Passenger  656.234 

Revision  of  656.231 

Steamer  656.236 


106 


RELATIVE   INDEX 


Rates. — Continued. 

Street  railway- 
Reactors 
Reamers 
Receivers,  Telephone 


636.236 
621.314.6 

621.954 
621.3S6.3 


Reclamation  from  tides  and  waves  627.5 

Recording  pressure  gages,   (air)  621.532 

Steam  621.184.73 

Recreation  buildings  725.8 

Rectifiers,  Arc  621.313.73 

Electrolytic  621.313.74 

Mechanical  621.313.72 

Rectifying  apparatus  (elect.)       621.313.7 

Refining  of  iron  and  steel  669.15 

Refining  of  ore  669.8 

Reflection  of  heat  536.3 

Reformatories  725.6 

Refraction  of   heat  536.3 

Refractories  669.82 

Alkaline  earth  669.827 

Aluminaceous  669.824 

Application  and  maintenance  of  669.829 

Argillaceous  669.823 

Carbonaceous  669.825 

Chromitic  669.826 

Rare  earth  669.828 

Siliceous  669.822 

Refreshment  buildings  725.7 

Refrigerating  fluids  621.564 

Refrigerating  machines  621.57 

Ammonia  621.572 

Carbonic  acid  621.574 

Miscellaneous  types  621.575 

RcfriLrerating  plants  621.565 

Refrigerating  systems  621.565 

Brine  621.565.1 

Design   of  621.566 

Direct  expansion  621.565.2 

Piping  for  621.566 

Refrigerator  cars  625.244 

Refrigerators  621.56 

Regulators,  Air  pressure  621.532 

Compensator  621.314.51 

for  sewers  628.2.")S 

Induction  621.314.52 

Magneto  621.314.53 


Potential  621.314.5 

Pressure   (compr.  air)  621.532 

Stean-*  pressure  621.185.4 

Reheating  of  compressed  air  621.534 

Reinforced  concrete              693.7  620.137 

Experimental  data  for  693.74 

Forms  and  centers  for  693.72 

Formulas  for  693.75 

Hennebique  system  of  693.714 

Ordinary  system  of  693.711 

Ransome's  system  of  693.712 

Roebling  system  of  693.715 

Special  applications  of  693.76 

systems  693.71 

testing  and  inspection  693.73 

Unit  system  of  693.713 

Relations  of  Capital  to  Labor  331.1 

Releasing  gear  engines  (Corliss, 

etc.)  621.164.4 

Religious  buildings  726 
Removal  of  impurities  from  water  628.16 

Repair  of  locomotives  621.138 

Repair  shops.  Car  625.26 

Locomotive  621.138.5 
Repairs  and  renewals  of  railway 

track  625.173 

Repulsion  motors  621.313.66 

Reservoirs  and  tank  sewers  628.28 

Reservoirs    (water  supply)  628.13 

Residences  728 

Resistance  of  air  to  trains  656.221.6 

of  engines  656.221.3 

of  foreign  rolling  stock  656.221.5 

of  freight  trains  656.221.1 

of  passenger  trains  656.221.2 

on  electric  roads  656.221.4 

Resistance  boxes  621.374.2 

meters  621.374.2 

Restaurants    (railway  service)  656.26 

Reverberatory  furnaces  669.831.5 

Rheostats  621.317.4 

Ring  and  key  (railway  blocking 

systems)  656.258 

River  and  ocean  transportation  387 

crossings  (sewers)  628.26 

engineering  627 


I 


RELATIVE   INDEX 


107 


Rivers,  Discharge  of,  etc.                    627.1 

Flow  of  532.5 

Rivet  machinery  621.97 

Riveted  joints  696.4 

Design  of  621.8S4 

Rivets  621.884 

Roadbed  and  track  (railway)  625.1 

apfTroaches  625.165 

Ballast   for  625.141 

bridges  625.13 

crossings  625.152 

Drainage  of  625.123 

Fences,  etc.,  for  626.162 

Maintenance  of  625.17 

Materials  for  625.18 

Rails  and  rail  attachments  for  625.143 

Section  houses  for  625.161 

Snow  screens  for  625.164 

Stone  work  for  625.13 

Subgrade  of  625.12 

Switches,  etc.,  for  625.151 

Ties  for  625.142 

Track  625.14 

Equipment  of  625.15 

Laying  of  625.144 

Tunnels  625.13 

Ventilation  of  625.13 

Turntables  625.154 

Road  engineering  625 

Road    machines.    Steam  621.14 

Roads  625.7 

Cable  625.5 

Country  625.7 

Underground   (mines)  622.62 

Roads  and  highways  625.7 

Asphalt  625.85 

Concrete  625.84 

Construction   of  625.74 

Construction  work  of                     625.75 

Cross  section  of  625.73 

Equipment  for  construction  of     625.74 

Maintenance  nf  way  of  625.76 

Metallic  625.87 

Paving  of  625.8 

Roadbed  of  625.73 

Reinforced  stone  for  625.87 


Sanitation  of  625.78 

Stone  covered  625.86 

Surveys  and  maps  of  routes  for  625.72 


Trees  and  shrubs  along 

625.77 

Vitreous  stone  for 

625.87 

Roasting  of  ore 

669.8 

Roasting  furnaces 

669.831 

Fuels  for 

669.81 

Rock  drills  (compressed  air) 

621.542 

Rods,   Lightning 

537.4 

Locomotive 

621.134.1 

Roebling  system  (reinforced  con- 

crete) 

693.715 

Roller  bearings 

621.822 

Rolling  bridges 

624.85 

Rolling,  Iron  &  steel 

669.184.2 

mills 

621.77 

Rolling  stock.  Electric  traction 

621.334 

Railway 

625.2 

Axles 

625.212 

Brakes 

625.25 

Clearance  of  bridges  and 

tunnels 

625.22 

Couplers  and  buffers 

625.216 

Draft  gears 

625.216 

Frames 

625.211 

Freight  cars 

625.24 

Capacity  of 

625.24 

Closed  and  covered 

625.243 

Dynamometer 

625.245 

Flat  cars 

625.241 

Hopper  and  dumping 

625.242 

Refrigerator 

625.244 

Unloaders  for 

625.247 

Weight  of 

625.24 

Lubricants  for 

625.214 

Passenger  cars 

625.23 

Compartment    cars 

625.231 

Dining   cars 

625.232 

Heating  and  ventilation 

of  625.234 

Lighting  of 

625.233 

Parlor  cars 

625.232 

Sleeping  cars 

625.232 

Types   of 

625.23 

Weight  of 

625.23 

Repair  shops  for 

625.26 

I 


108 


RELATIVE   INDEX 


Rolling   stock.— Contitnied. 

of  cars 

625.234 

Supplies  and  materials  for 

625.27 

of  factories 

628.51 

Suspension  of 

625.213 

of  streets  and  roads 

625.78 

Tires  for 

625.212 

of  towns 

628.4 

Trucks  for 

625.215 

Sawing  machinery 

621.93 

Wheels  for 

625.213 

Metal 

621.932 

Street  railway 

625.617 

Wood 

621.935 

Use  of,  and  distribution  of 

656.223 

Scaffolding 

624.95 

Roof  and  ceiling  tile 

691.472 

Scale  prevention  in  locomotives  621.133.7 

Roofs,  Fireproofing  of 

693.84 

in   stationary  boilers 

621.194.4 

Roofing 

695 

Scales,   Weighing 

531.21 

Asphalt 

695.6 

Schedules  of  trains 

656.222 

Cloth 

695.8 

Scientific  buildings 

727 

Felt 

695.7 

Screening   (mines) 

622.74 

Gravel 

695.7 

Coal 

622.783 

Metal 

695.4 

Screw  machines 

621.99 

Iron  and  steel 

695.5 

threads.  Systems  of 

621.882 

Shingle 

695.1 

Screws                                      696. 

5     621.882 

Slate 

695.2 

for  transmitting  motion 

621.882 

Thatch 

695.9 

Searchlights 

621.325.7 

Tile 

695.3 

Secondary  cells 

621.354 

Roofs    (architectural) 

721.5 

Section-houses    (railway) 

625.161 

Rope  transmission 

621.853 

Selenitic  artificial  stone 

691.34 

Ropes,  Hoisting 

622.674 

Selenitic  lime 

691.53 

Rotary  blowers 

621.62 

Semi-bituminous  coal 

553.24 

pumps 

621.66 

Separators,    Steam 

621.197.4 

steam  engines 

621.166 

Series,  A.  C.  motors 

621.313.65 

Round  houses                    725.33 

621.138.1 

Service  pipes,  Water  supply 

628.15 

Running  gear,  Lxtcomotive 

621.135 

Service  reservoirs 

628.13 

Rural  water  supply 

628.7 

Sewerage,  Discharge  of.  into 

sea  628.39 

Deodorization  and  disinfect 

ion 

s 

of 

628.32 

Disposal  of 

628.3 

Saddles,  Locomotive 

r.21.135.3 

farming 

628.37 

Safety  appliances   (railways) 

656.25 

Filtration  of 

628.35 

Safety  devices   (railways) 

656.259 

irrigation 

628.36 

Safety  valves 

621.133.9 

manures 

628.38 

Locomotive 

621.133.9 

Physical  properties  of 

628.31 

Sampling   (metallurgy) 

669.91 

Precipitation  of 

628.34 

Sandblasting 

609.1 85. 1 

.Subsidence  of 

628.33 

Sands  (ccon.  geology) 

553.02 

Si-wer  appurtenances 

628.25 

Sandstone  (building  material) 

001.231 

inlets 

628.255 

Sandstone  (geol.) 

553.53 

tiles    (building) 

691.49 

Sanitary  engineering 

628 

Sewerage  systems 

628.21 

Sanitation,    Industrial 

628.5 

works 

628.2 

ill  trades 

628.51 

pumping  stations  for 

628.29 

RElwATlVE  INDEX 


109 


Sewers,  Design  and  construction 

of  628.24 
Intercepting  and  outfall  628.27 
Reservoirs  for  628.28 
River  crossings  for  628.26 
Shape  and  size  of  628.22 
Tank  628.28 
Ventilation  of  628.23 
Shaft  governor  engines,  Auto- 
matic                                      621.164..T 
Shaft  sinking  (mines)  622.25 
Shafting,   Shop  621.823 
Location  of  621.751 
Shafts,  Engine  and  propeller  621.824 
Shale,  Bituminous  553.23 
Shapers  621.912 
Shearing  machinery  621.96 
Shell,  Boiler                                   621.184.52 
Locomotive                                   621.133.3 
Shifting  bridges  624.8 
Ship  building  699 
railways  625.91 
Shipping    facilities    (manufac- 
tories) 621.701 
Shone  system  of  sewerage  628.214 
Shop  buildings  621.702 
shafting  621.823 
Shops,  Arrangement  of  621.702 
Boiler  and  sheet  metal  621.792 
Car  repair  625.26 
Finishing  621.795 
Forge  621.73 
for  special  processes  621.794 
Machine  621.75 
Mining  622.93 
Organization  and  administra- 
tion of  621.704 
Pattern  621.72 
Railway  725.33 
Shovels,  Mechanical    (mining)       622.214 
Power  621.865 
Steam  621.167 
Sidewalks,  Concrete  693.54 
Curbing  for  625.88 
Establishment  of  625.88 
Flagging  of  625.88 


Signal  apparatus,   Interlocking     656.257 
Signal  devices   (electric  transmis- 
sion) 621.317.5 
systems,   Centralization  of  656.257 
Signaling  in  mines  622.48 
Signals,  Bell   (railways)  656.254 
Block  656.256 
block,  Automatic  electric  656.256.3 
Electric  537.88 
Electrically  controlled  manual 

block  656.256.2 

Forms,   colors,   sounds  of  656.251 

Hand  and  train  656.252 

in  train  operation  656.251 

Station  656.253 

Pneumatic  block  656.256.4 

Simple  manual  block  656.256.1 

Signs.  Electric  621.321.44 

Siliceous  refractories  669.822 

Silicon  steel  669.137 

Silver,    Metallurgy  of  669.2 

alloys  669.223 

amalgamation  with  gold  669.231 

Economic  factors  cone.  669.221 

Leaching  of  669.228 

Plants  for  the  prod,  of  669.229 

Properties  of  669.222 

Simplex  telegraphy  621.382.31 

Single  acting  engines  621.164.5 

Skew  bevel  gears  621.833.2 

Skips  (mine  hoisting)  622.68 

Slags  from  metals  669.86 

Slate    (building  material)  691.24 

roofing  695.2 

Slates   (geol.)  5.53.54 

Sleeping  cars  625.232 

Slide  valves.  Locomotive  621.134.2 

Slot,  Electric  656.258 

Slotters  621.912 

Sludge.  Disposal  of  628.348 

Sluices  621.29 

Smelting  of  ore  669.8 

Fuels  for  669.81 

Smoke  box,  Locomotive  621.133.4 

Smoke,   consumers  621.183.8 

flues  and  chimneys                '  697.8 


no 


RELATIVE   INDEX 


Smoke. — Cant  in  ued. 

from  special  industries 

from  steam  generators 

nuisance 
Snow  screens  (railway) 
Societies,  Engineering 
Solar  engines 
Solids,  Properties  of 
Sound 
Specifications,  Building 

Engineering 
Speisses   (metallurgy) 
Spiral  gears 
Springs,  Locomotive 
Springs,  Strength  of 
Sprinkling  of  streets 
Spur  gears 
Stacks   (boiler  plants) 

Locomotive 


628.539 

628.538 

628.53 

625.164 

620.G 

621.47 

539.2 

534 

692.3 

62(003) 

669.87 

621.833.3 

621.135.3 

620.112.85 

628.46 

621.833.1 

621.183.8 

621.133.4 


Stamping  machines.  Hydraulic  621.266 

Standard  cells  621.374.3 

Stairbuilding  694 

Stand-pipes   (water  supply)  628.12 

State  control  of  railways  385.3 

Static  electricity  537.2 

Statics  531.2 

Graphic  531.2 

Station  signals  656.253 

Stationary  boilers  621.184.24 

Stationary  steam  engines  021.16 

Stations.  Central  621.312 

for  lighting  621.312.2 

for  power  621.312.4 

for  railways  621.312.3 

Stations,    Railway  656.21 

for  special  purposes    (coal, 

live  stock,  etc.)  656.213 

freight,  Arrangement  of  656.;212 

Heating  and  lighting  of  656.215 

passenger.  Arrangement  of  656.211 

Union  656.214 

Statistics.  Engineering  62C001) 

of  railways  385.0 

Staying  of  boilers  621.184.52 

Stays   (locomotive  boilers)  621.133.2 

Steam  boilers  621.194     621.184 

Steam  boilers  and  power  plants     621.19 


Steam,  collectors  621.184.79 
condensation  in  pipes  621.185.1 
distribution  in  locomotives      621.134.2 
dredges  621.167 
engine,    dynamometers  621.197.7 
indicators  62L197.7 
lubricators  621.197.7 
mechanism  621.11 
tachometers  621.197.7 
engineering  621.1 
engines,  Care  and  manage- 
ment of  621.195 
Rotary  621.166 
Stationary  621.16 
Themiiodynamics    of  536.73 
Traction  621.14 
fitting  696 
Flow  of,  in  pipes  621.185.1 
furnaces  621.183 
gages                           621.184.73     621.197.7 
generation  621.18 
heating  697.5 
Exhaust  697.53 
High  pressure  697.51 
Low  pressure  697.52 
Vacuum  697.54 
piping  621.185 
plant  621.19 
accessories  621.197 
instruments  621.197.7 
pressure  gages  621.184.73 
pressure  regulators  621.185.4 
Production  of,  in  locomotives  621.133 
pumps  and  pumping  engines 

(see  Pumps)  621.64 

road  machines  621.14 

separators  621.197.4 

shovels  621.167 

superheaters  621.197.5 
Transmission  and  distribution 

of  621.185 

traps  621.185.5 
Steamship  lines,  Competition  of 

with  railways  385.2 

Steam  turbine  621.165 

buckets  621.165.12 


RELATIVE   INDEX 


111 


Steam   turbine. — Continued. 

calculations  621.165.11 

discs,  Stresses  in  621.165.14 

guide  vanes  and  nozzles  621.165.13 

theory  621.165.1 

vanes  and  buckets  621.165.12 

Steam  turbines  621.165 
Combined  velocity  and  pressure 

621.165.23 

Construction   of  621.165.3 

Design  of  621.165.3 

Pressure  type  621.165.22 

Stresses  in  621.165.14 

Types  of  621.165.2 

Velocity  type  621.165.21 

Windage  in  621.165.15 

Steam  valves  621.185.4 

Steel  669.1 

Alloys  of  669.13 

Chrome  669.133 

Manganese  669.132 

Molybdenum  669.135 

Nickel  669.131 

Silicon  669.137 

Titanium  669.138 

Vanadium  669.136 

Annealing  of  669.181.3 

Carburization  of  669.16 

Cementation  process  for         669.161 

Crucible  process  for  669.162 

Case  hardening  of  669.182 

Chemical  properties  of  669.124 

Economic  factors  cone.  669.11 

Finishing  of  669.18.') 

forging  669.184.1 

founding  669.17 

Hardening  of  669.181.1 

in  buildings  691.7 

Machining  of  669.184.5 

Metallurgy   of  669.1 

Melting  of  669.171 

Moulding  of  669.172 

Nature  and  properties  of  669.12 

Painting  of  669.185.3 

(for  protection)  691.791 

Physical  properties  of  669.123 

pickling  669.185.2 


Pressing  of  669.184.4 

Properties  and  constants  of        669.12 

Protection  of  691.79 

Purification  of  (see  Iron)  669.15 

Rolling  of  669.184.2 

roofing  695.5 

Sand  blasting  of  669.185.1 

Structure  and  composition  of     669.122 

Tempering  of  669.181.2 

Tests  of  669.123     620.17 

Treatment  of  669.18 

Uses  of  669.115 

Steel  works    (architecture)  725.43 

Steels,  Special  669.139 

Stenography  653 

Stokers,  Mechanical  621.183.6 

Stone.  Artificial  691.3     666.8 

Beton   coigniet  691.31 

Ransome  691.32 

Selenitic  691.34 

Tests  of  620.139 

as  building  material  691.2 

construction  693.1 

Preservation  of  691.29 

Protection  of  691.2 

Tests  of   (appl.  mech.)  620.13 

Stones,   Building  553.5 

Stoneware  666.6 

Stoping    (mining)  622.27 

Overhand  622.341 

Underhand  622.342 

Storage  and  service  reservoirs        628.13 

Storage  batteries  621.354 

Application  of  621.3,54.4 

Care  and  handling  of  621.354.18 

Construction  of  621.354.2 

Operation  of  621.354.3 

Storage  buildings  725.3 

Storage  of  electricity  537.84 

Storage  of  drawings  621.717 

Storage  of  patterns  621.727 

Storage  reservoirs  628.13 

Store  houses,  (manufactories)       621.796 

Storm-water  flow  628.221 

Stoves,  Heating  by  697.2 

Straightening  machinery  621.983 


112 


RELATIVE    INDEX. 


621.331.34 

621.331.343 

621.331.344 

621.331.342 

625.7 

625.78 

628.46 

539.4 

620.112 

620.112.85 

621.705 


of 
620.11 


Street  cleaning  and  sprinkling         628.46 
Street   railways  625.6 

Electric    (see  Electric  trac- 
tion) 

Elevated 

Subways 

Surface 
Streets,  City 

Sanitation  of 

Sprinkling  and  cleanin 
Strength  of   materials 

Tests  of 
Strength  of  springs 
Strikes  and  lockouts 
Study  and  teaching  of  engineer- 
ing 620.7 
Subgrade    (railways)                         625.12 

(street  railways)  625.613 

Submarine    cable   telegraphy       621.382.8 
Subsidence  (sewerage)  628.33 

Substations,   Electric  621.312.6 

Subways  621.331.344     625.4 

Superheaters,    Steam  621.197.5 

Superintendence  of  building  con- 
struction 692.6 
Supporting  ground   (mining)           622.28 
Surface,  condensers                     621.197.62 

grinding  machines  621.922 

lines   (street  railways)  621.331.342 

transportation   (mines)  622.69 

Survey  of  railway  routes  625.11 

Preliminary  625.111 

Surveying,   Mine  622.14 

Surface    (mining)  622.13 

Surveys,  Magnetic  622.15 

Mineral  622.131 

Suspension,  bridges  (see  Bridges)  624.5 

chains  and  cables  624.52 

of   locomotives  621.135.3 

of  railway  cars  625.213 

Swing  bridges  624.82 

Switch  and  signal  apparatus.  In- 
terlocking 656.257 
Switchboard    meters    and    indi- 
cating devices                        621.317.6 


panels  621.317.2 
protective   devices  621.317.8 
Switchboards  621.317 
Telephone   (see  Telephone)        621.387 
Automatic  621.387.7 
Switches,    Electric  621.317.3     621.328.7 
Dial  621.317.33 
Knife  621.317.32 
Oil  621.317.35 
Plug  621.317.34 
Switches,  Railway  625.151 
Syenites    (geol.)  553.52 
Synchronizers  621.374.91 
Synchronous   commutating  ma- 
chines 621.313.4 
convertors  621.313.53 
machines  621.313.4 
motors  621.313.44 
telegraphy  621.382.36 

T 

Tachometers  621.197.7 

Tackle  621.863 

Hydraulic  621.262 

Tables    and    calculations, 

neering 
Tail  races 
Tank  sewers 
Tanks,  Precipitation   (sew 

Track 
Tapping  machinery 
Tar    (building  material) 
Taxes   (street  railway) 
Technology,   Chemical 
Telegraph 
codes 

engineering 
instruments 
Intermediate 
Receiving 
Transmitting' 
systems 
.Automatic  code 
Duplex 


Engi- 

620.8 

621.29 

628.28 

erage)  628.341 

621.136.3 

621.955 

691.96 

625.611 

660 

654     537.81 

621. .382. 15 

621.38 

621.383 

621.383.2 

621.383.3 

621.383.1 

621.382 

621.382.4 

621.382.32 


RELATIVE   INDEX 


113 


Telegraph,  systems. — Continued. 

Fac-simile  telegraphy  621.382.7 

Multiplex  621.382.35 

Multiplex  harmonic  621.383.37 

Multiplex  synchronous  621.382.3G 

Printing  telegraphy  621.382.5 

Quadruplex  621.382.34 

Simplex  621.382.31 

Writing  telegraphy  621.382.6 

Uses  of,  in  transportation  656.254 

Telegraphy    (communication)  654 

(engineering)  621.382 

Combined    telephony   and  621.382.95 

induction  621.382.94 

Submarine   cable  621.382.8 

Wireless  621.384 

Telephone  654.6     537.82 

(engineering)  621.38 

instruments  621.386 

Batteries  621.386.96 

Call  receiving  apparatus  621.386.7 

Call   sending  apparatus  621.386.8 

Coin  collecting  devices  621.386.92 

Condensers  621.386.5 

Distributing  frames  and 

racks  621.387.92 

Induction  coils  621.386.4 

Meters  and  counters  621.387.96 

Protective    devices  621.386.94 

Receivers  621.386.3 

Transmitters  621.386.2 

power  plant  621.387.6 

Accumulators    for  621.387.62 

Generators    for  621.387.63 

switchboards.  Central  621.387 

Automatic  621.387.7 

Manual  621.387.2 

Multiple  621.387.3 

Transfer  621.387.4 

switching  devices  621.386.6 

systems  621.385 

Automatic  621.385.75 

Central   switchboard  621.385.4 

Intercommunicating  621.385.3 

Multiple   switchboard  621.385.5 

Private  exchange  621.385.8 


Semi-Autoniatic  621.385.72 

Uses  of,  in  transportation       656.254 

transmission  621.387.8 

Cable  construction  for  621.387.84 

Long  distance  621.387.82 

Pupin  coils  621.387.86 

transposition  621.387.83 

Telephony    (communication)  654.6 

(engineering)  621.385 

Combined  telegraphy  and  621.382.95 

Wireless  621.384.5 

Telfers  621.868 

Temperature,  Influence  of 

on  metals  620.112.1 
Measurement  of  536.5 
by  electric  methods  536.53 
regulators,  Electric  621.39 
Tempering  steel  669.181.2 
Tender  brakes  621.136.1 
Tenders  621.136 
Couplings   for  621.136.2 
Design  of  621.136.1 
Weight  of  621.136.1 
Terminals  and  stations,  Railway     656.21 
Terra  cotta   (building)  691.48 
construction  693.3 
Textile   factories    (architecture)      725.41 
Thatch   roofing  695.9 
Thermodynamics  536.7 
Applied  621.101 
of  air  compression  621.534 
of  perfect  gases  536.71 
of  steam  engine  and  heat  mo- 
tors 536.73 
of  vapors  536.72 
Thermometers   (steam  plant)  621.197.7 
Thermometry  536.51 
Third-rail  for  elect,  traction  621.332.3 
Threads,   screw.   Systems  of  621.882 
Throttle,  Locomotive  621.1.33.6 
Throttling  engines  621.164.42 
Tile  (chem.  tech.)  666.7 
floors  691.471 
roofing  and   ceiling  691.472 
roofing  695.3 
sewers  691.49 


114 

Tile. — Continued. 

Tests  of 
Tiles  (building  materials) 

Hollow  structural 
Timbering  of  mines 


RELATIVE  INDEX 


620.14 

691.40 

691.47 

622.281 


Timber,  Tests  of  (appl.  mech.)       620.12 

Tin,  Metallurgy  of  669.6 

Tinnint?  of  iron  and  steel  691.792 

rr-          r-o^  625.212 
Tires,  Car 

Titanium  steel  ^69.138 

Tonnage  rating  6.56.225 

Tool  making  621.756 
Tools,  Machine    (see  Machme 

tools)  621.9 

(shop  equipment)  621.752.1 

Tools,  Pneumatic  621.542 

Tooth  curves  621.831 

Torsion  539.3 

Towers  624.95 

for  suspension  bridges  624.54 

for  transmission  lines  621.319.22;) 

Towns,  Sanitation  of  628.4 

Water  supply  for  628.1 

Track    (electric  traction)  621.333 

Track     (railway)     (see    Road 

bed)  625.14 
tanks  621.136.3 
Traction,  boilers  621.184.23 
dynamometers  531.21 
engines  621.14 
Electric  (see  Electric  traction)  621.33 
systems  625.63 
Tractive   force  of   locomotives   621.131.1 
Trade   rules    (building  construc- 
tion) 692.94 
Trades,  Mechanic  680 
Traffic    (transportation)  656.23 
Traffic,  Division   of  6.56.233 
Traffic   (street  rail w ay >  625.611 
Train  crews,  Assignment  of          621.137 
Train,   dispatching  6.-.6.2.54 
resistance  656.221 
schedules  656.222 
service.   Passenger  656.224 
Freight  6.56.225 
Baggage  656.226 
signals  656.252 


Trains  ^^^'^^ 
Making  up  of  656.22^ 
Protection  of,  in  distress  656.254 
Running  of  656.222 
Tramming  (mines)  622.651.2 
Trams   (mines)  622.63 
Tramways  625.62 
Transfer  boards    (telephone)  621.387.4 
Transformers  621.314.3 
Auto.  621.314.4 
Constant  current  621.314.32 
Constant  potential  621.314.33 
Meter  621.314.38 
Phase  changing  621.314.34 
substations  621.312.63 
Transmission,  Air  621.532 
dynamometers  ^^^■'* 
Hemp  rope  621.853 
machinery  621.8 
of  compressed  air   (see  Com- 
pressed air)  621.53 
of  electrical  energy  621.319 
Lines  for  621.319.2 
Overhead  621.319.22 
Underground  621.319.23 
Poles  and  towers  for  621.319.225 
Protective  devices  for  621.319.8 
Retaining    and    supporting 

devices   for  621.319.4 

Systems  of  621.319.12 

Alternating    current  621.319.123 

Composite  621.319.125 

Continuous  current  621.319.122 

of  force  531.8 

of  power  537.84 

of  steam  621.185 

Wire  rope  621.854 

Transmitters,  Telephone  621.386.2 

Transportation  656 

Iniildings  72.n.3 

l)y  horseless  vehicles  <'-''6-^ 

by  railways  656.2 
claims.  Damage  in,  Delays  in      656.24 

Cost  of  656.232 

in  mines  622.6 

Military  656.229 


reXative  index. 


115 


Transportation. — Continued. 
of  dangerous    freight 
of  perishable   freight 
on  roads  and  highways 
Pools    and    agreements    relat- 
ing to  656.233 
River  and  ocean  387 
tolls  and  rates  656.231 
Trap    (geol.)  553.57 
Traps  for  sewers  628.256 
Traps,  Steam                 621.197.3  621.185.5 
Traveling  cranes  621.874 
Tread  mills  621.46 
Tributary   railways  625.6 
Operation  of  656.27 
Trigonometry  514 
Trolley  lines  621.331.2 
Trucks,  Bissell  621.135.4 
Four-wheel  621.135.4 
Locomotive  621.135.4 
of  railway  cars  625.215 
Trunk  lines,  Electric  621.331.32 
Trunnion  bridges  624.84 
Truss,    Bowstring  624.32 
Cantilever  624.33 
Trussed  girders   for  bridges  624.08 
Trusses,   Fireproofing  of  693.87 
Tubes,  Locomotive  621.133.3 
Tubular  bridges  624.4 
Tungsten    filament   incandescent 

lamps  621.326.43 

TunneUng  and  drifting  622.26 

Tunneling   devices,    Hydraulic       621.269 

Tunnels    (railway)  625.13 

Clearance  of  625.22 

for  telephone  cables  621.319.23 

for  water  supply  628.14 

Ventilation  of  625.13 

Turbines,  Gas  621.433 

Steam  621.165 

Buckets   for  621.165.12 

Vanes  for  621.165.12 

Water  621.24 

Impulse  621.247 

Reaction  or  pressure  621.242 

Turning  machinery  621.94 


Turntables 

625.154 

656.227 

Two-cycle  engines 

621.432.2 

656.227 

Typewriters 

652 

656.1 

u 

Underground  railways  625.4 

roads    (mines)  622.62 

transmission  lines  621.319.23 

Undershot  water  wheels  621.23 

Underwriters   requirements   for 

electric  lighting  621.328.1 
Union  stations  656.214 
Unions,  Labor  621.705 
Unit  system  (reinforced  con- 
crete) 693.713 
LIniversities  727.3 
Urinals    (sanitation)  628.45 


Vacuum  appliances  621.55 
lamps  for  special  radiation       621.327.7 
Valve  gears  621.84 
for  locomotives  621.134.22 
Valves,  for  locomotives  621.134.22 
Blowout  621.184.79 
Safety  621.185.4 
(boiler)  621.184.73 
Steam  621.185.4 
for  sewers  628.257 
Vanadium  Steel  669.136 
Vanes    (steam  turbines)  621.165.12 
Vapor  engines,  Binary  621.44 
lamps   for  incandescent  light- 
ing 621.327.3 
Vapors,   Properties   of  533.1 
Thermodynamics  of  536.72 
Vaulted   edifices   of   masonry  624.92 
Vaults  624.9 
and  arches    (bridges)  624.06 
Fireproofing  of  693.88 
Vegetable  materials.  Tests  of        620.197 
oils  665.3 
Velocity  turbines  621.165.21 
Ventilation  628.8     697.9 
by  fans  697.98 


IIG 


RELATIVE  INDEX 


V'entilation. — Continued. 

Exhaust  system  of 

697.93 

Foul   air  ducts    for 

697.95 

Fresh  air  ducts  for 

697.94 

Natural  system  of 

697.91 

of  cars 

625.234 

of  mines   (see  .Mines, 

Ventila- 

tion  of) 

622.4 

of  sewers 

628.23 

of  tunnels 

625.13 

Plenum  system  of 

697.92 

Regulation   of   air   supply    fo 

r     697.97 

Treatment  of  air   for 

697.96 

Vestibule  cars 

625.232 

Villages,   Water   supply 

for 

628.7 

Voltaic  cells  and  generators 

621.35 

Containers    for 

621.352.1 

Electrodes  for 

621.352.2 

Electrolytes  for 

621.352.4 

Voltmeters 

621.374.3 

w 


Wages 

331.2 

Labor  and 

331 

Walls    (architecture) 

721.2 

Fireproofing   of 

693.82 

Warehouses,   Cold   storage 

725.35 

Washing  of  coal 

622.784 

Wastes,  Disposal  of 

628.54 

Discharge  of.    in    streams 

628.541 

Filtration  of 

628.545 

Purification  of  by  the  soil 

628.546 

Water 

532 

accumulators 

621.254 

acqueducts 

628.14 

conduits 

628.14 

engines 

621.2 

Filterbasins   for 

628.16 

Flow  of,  in  pipes 

532.5 

for  towns 

628.1 

gages   (boilers)                         6; 

21.184.72 

Impurities    in,    and    their    re- 

moval 

628.16 

Mains  and  service  pipes  for 

628.15 

meters 

628.17 

motors 

621.2 

pressure  engines  621.25 
Purification    of,    for    locomo- 
tives 621.133.7 
scoops   for  tenders  621.136.3 
Sources  of  628.11 
storage   reservoirs  628.13 
supply  for  villages  and  coun- 
try houses  628.7 
tunnels  628.14 
turbines  621.24 
Impulse  621.247 
Reaction    or    pressure  621.242 
Use  and  waste  of  628.17 
wheels  621.21 
Breast  021.22 
Overshot  621.22 
Undershot  621.23 
Water-tube  l)oilers  621.184.26 
Water-works  628 
Watt-hour  meters  621.374.5 
Wattmeters  621.374.6 
Wear  and  duration  of  boilers       621.196 
Weathering  of  materials  620.112.2 
Weighing  scales  531.21 
Weight  and  capacity  of  freight 

cars  625.24 

of  passenger  cars  625.23 

of  tenders  021.136.1 

Weights  and  measures  389 

Wells   for  water  supply  628.11 

Wheatstone   bridges  621.374.2 

Wheels,   Car  625.212 

Balancing  of  625.212 

Breast  621.22 

Locomotive  621.135.2 

Overshot  621.22 

Toothed  621.83 

Undershot  021.23 

Water  621.21 

Whistles.   Boiler   warning  621.184.72 

Wincius  621.864 

Windage   in   steam   turliines  021. 165. 15 

Wind   engines  621.45 

Windows,   .'Xrchitecture   of  721. s 

Windlasses  021.864 

Windmills  621.45 


reXative:  index 


117 


Wire  drawing  669.184.3 

Wireless   telegraphy  621.384.2 

Wiring,  Central  station  621.317 

Interior  621.328.2 

Wire  rope  transmission  621.854 

Women,  Labor  of  331.4 

Wood  boring  machinery  621.953 

planing  machinery  621.913 

sawing  machinery  621.933 

turning  lathes  621.943 

Woods,   Preservation  of  691.18 

used  in  building  691.1 

Woodworking  methods  and  pro- 
cesses 621.723 
Woodworking  mills  (architec- 
ture) 725.44 
Woodworking  shop  621.72 
Wool,  Mineral  (for  building)  691.91 
Work,  Theory  of  531.4 


Working  of  mines  622.3 

Works,  Engineering  621.7 

Worm  gears  621.833.3 

Writing,  Methods  of  652 

Wrought  iron   (in  buildings)  691.73 

Puddling  process  for  the 

mfg-  of  669.151 


Zinc,  Metallurgy  of  669. j 

alloys  669.53 

Economic   factors  cone.  669.51 

Leaching  of  669.58 

Plants  for  the  prod,  of                669.59 

Properties  of  669.52 

Refining  of  669.57 

Roasting  of  669.54 

Smelting  of  669.55 

Zincs    (boiler)  621.184.79 

Zone  tariffs  656.231 


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PUBLICATIONS  OF  THE  ENGINEERING  EXPERIMENT  STATION 

Bulletin  No.  29.  Tests  of  Reinforced  Concrete  Beams:  Resistance  to  Web  Stresses.  Series 
of  1907  and  1908,  by  Arthur  N.  Talbot.     1909.     Forty-five  cents. 

Bulletin  No.  30.  On  the  Rate  of  Formation  of  Carbon  Monoxide  in  Gas  Producers,  by 
J.  K.  Clement,  L.  H.  Adams,  and   C.   N.  Haskins.      1909.      Twenty-five  cents. 

Bulletin  No.  31.  Fuel  Tests  with  House-heating  Pioilers,  by  J.  M.  Snodgrass.  1909.  Fifty- 
five  cents. 

Bulletin  No.  32.  The  Occluded  Gases  in  Coal,  by  S.  W.  Parr  and  Perry  Barker.  1909. 
Fifteen  cents. 

Bulletin  No.  33.  Tests  of  Tungsten  Lamps,  by  T.  II.  Amrine  and  A.  Guell.  1909. 
Twenty  cents. 

Bulletin  No.  34.  Tests  of  Two  Types  of  Tile  Roof  Furnaces  under  a  Water-tube  Boiler, 
by  J.  M.  Snodgrass.     1909.     Fifteen  cents. 

*Bulletin  No.  35.  A  Study  of  Base  and  Bearing  Plates  for  Columns  and  Beams,  by  N. 
Clifford   Ricker.     1909.     Twenty  cents. 

Bulletin  No.  36.  The  Thermal  Conductivity  of  Fire-Clay  at  High  Temperatures,  by  J.  K. 
Clement  and   W.   L.   Egy-      1909.     Twenty  cents. 

*Bulletin  No.  37.  Unit  Coal  and  the  Composition  of  Coal  Ash,  by  S.  \N'.  Parr  and  W.  F. 
Wheeler.     1909.     Thirty-five  cents. 

Bulletin  No.  38.  The  Weathering  of  Coal,  by  S.  W.  Parr  and  W.  Iv.  Wheeler.  1909. 
Twenty-five  cents. 

Bulletin  No.  39.  Tests  of  Washed  Grades  of  Illinois  Coal,  by  C.  S.  McGovney.  1909. 
Seventy-five  cents. 

Bulletin  No.  40.  A  Study  in  Heat  Transmission,  by  J.  K.  Clement  and  C.  M.  Garland. 
19 10.      Ten  Cents. 

Bulletin  No.  41.     Tests  of  Timber  Beams,  by  Artliur  N.  Talbot.      1910.     Twenty  cents. 

Bulletin  No.  42.  The  Effect  of  Keyways  on  the  Strength  of  Shafts,  by  Herbert  F.  Moore. 
1910.     Ten  cents. 

*  Bulletin  No.  43.  Freight  Train  Resistance,  by  Edward  C.  Schmidt.  1910.  Seventy-five 
cents. 

Bulletin  No.  44.  An  Investigation  of  Built-up  Columns  under  Load,  by  .\rthur  N.  Talbot 
and  Herbert  F.   Moore.      191 1.     Thirty-five  cents. 

Bulletin  No.  45.  The  Strength  of  Oxyacetylene  Welds  in  Steel,  by  Herbert  L.  Whitte- 
more.      191 1.     Thirty-five  cents. 

Bulletin  No.  46.  The  Spontaneous  Combustion  of  Coal,  by  S.  W.  Parr  and  F.  W.  Kress- 
mann.     191 1.     Forty-five  cents. 

Bulletin  No.  4/.  Magnetic  Properties  of  Ileusler  Alloys,  by  Edward  B.  Stephenson.  191 1. 
Twenty-five  cents. 

Bulletin  No.  48.  Resistance  to  Flow  through  Locomotive  Water  Columns,  by  .\rthur  N. 
Talbot  and  Melvin   L.   Enger.      191:.     Forty  cents. 

Bulletin  No.  49.  Tests  of  Nickel-Steel  Riveted  Joints,  by  .\rtbur  N.  Talbot  and  Herbert 
F.   Moore.      191 1.     Thirty  cents. 

Bulletin  No.  50.  Tests  of  a  Suction  Gas  Producer,  by  C.  M.  Garland  and  A.  P.  Kratz. 
191 2.     Fifty  cents. 

Bulletin  No.  51.   Street  Lighting,  by  J.   M.   Bryant  and  H.   G.    Hake.    1912.  Thirty-five  cents. 

Bulletin  No.  5.'.  An  investigation  of  the  Strength  of  Rolled  Zinc,  by  Herbert  F.  Moore. 
1 91 2.     Fifteen  cents. 

Bulletin  No.  53.     Inductance  of  Coils,  by  Morgan  Brooks  and  H.   M.  Turner.      1912.     Forty  \ 
cents. 

Bulletin  No.  54.  Mechanical  Stresses  in  Transmission  Lines,  by  A.  Guell.  1912.  Twenty 
cents. 

Bulletin  No.  $5.  Starting  Currents  of  Transformers,  with  Special  Reference  to  Trans- 
formers with   Silicon   Steel   Cores,  by  Trygv'e  D.  Yensen.      1912.     Twenty  cents. 

Bulletin  No.  $6.  Tests  of  Columns:  .\n  Investigation  of  the  Value  of  Concrete  as  Re- 
inforcmcnt  for  Structural  Steel  Columns,  by  Arthur  \.  Talbot  and  .\rthur  R.  Lord.  1912. 
Twenty-five  cents. 

Bulletin^  No.  $7.  Superheated  Steam  in  Locomotive  Service.  .\  Review  of  Publication  No. 
127  of  the  Carnegie  Institution  nf  Washington,  by  W.    !•'.   M.  (loss.     1912.     Forty  cents. 

Bulletin  No.  5S.  A  Kew  ,\nalysis  of  the  Cylinder  Performance  of  Reciprocating  Engines, 
by  J.    Paul   Claylrin.      1912.     Sixty  cents. 

Bulletin  No.  5p.  The  l^fFects  of  Cold  Weather  upon  Train  Resistance  and  Tonnage  Rating, 
by  I'!dward  C.  Schmidt  and   V.  W.  Marquis.     191 2.     Twenty  cents. 

Bulletin  No.  60.  The  Coking  of  Coal  at  Low  Temperatures,  with  a  Preliminary  Study  of 
the   By-Products,  by   S.   W.   Parr  and   II.   L.   Olin.      191 2.      Twenty-five  cents. 

Bulletin  No.  61.  Characteristics  and  Limitations  of  the  Scries  Transformer,  by  .'\.  R. 
Anderson  and  H.  R.  Woodrow.  1912.    Twenty-five  cents.  (Heady  for  distribution   about   i)ec.    15.) 


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